List of Arrow characters
Arrow is an American television series developed by Greg Berlanti, Marc Guggenheim, and Andrew Kreisberg, based on the DC Comics character Green Arrow. Many of the other characters appearing in the series are also based on DC Comics characters. The series premiered on October 10, 2012 in the United States on The CW television network, and is currently in its fifth season. On January 8, 2017, The CW announced that Arrow would be renewed for a sixth season.
Arrow follows the story of billionaire playboy Oliver Queen (Stephen Amell). He is discovered after being stranded for five years on an isolated island. When he returns home, Queen secretly becomes a bow-and-arrow-wielding vigilante in order to honor his father's legacy and atone for his family's sins.
Throughout the series, he is joined by others in his quest to protect Starling City. The characters that eventually aid Queen's vigilante efforts include: former soldier John Diggle (David Ramsey), I.T. expert and skilled hacker Felicity Smoak (Emily Bett Rickards), former assassin Sara Lance (Caity Lotz), aspiring vigilante Roy Harper (Colton Haynes), Oliver's sister Thea / Speedy (Willa Holland), and attorney-turned-vigilante Laurel Lance (Katie Cassidy). The group also receives support from Quentin Lance (Paul Blackthorne) who works at the police department. Characters from Oliver's past appear in a separate story arc based on Oliver's flashbacks, which highlight parallels from Oliver's history that shape events in the main story.
The following is a list of characters who have appeared in the television series. Many are named after (or based on) DC Comics characters.
- 1 Overview
- 2 Main characters
- 2.1 Oliver Queen / Green Arrow
- 2.2 Laurel Lance / Black Canary / Black Siren
- 2.3 Tommy Merlyn
- 2.4 John Diggle / Spartan
- 2.5 Thea Queen / Speedy
- 2.6 Moira Queen
- 2.7 Quentin Lance
- 2.8 Felicity Smoak / Overwatch
- 2.9 Roy Harper / Arsenal
- 2.10 Slade Wilson / Deathstroke
- 2.11 Malcolm Merlyn / Dark Archer
- 2.12 Curtis Holt / Mister Terrific
- 2.13 Adrian Chase / Prometheus
- 2.14 Rene Ramirez / Wild Dog
- 2.15 Dinah Drake / Black Canary
- 3 Recurring characters
- 4 Guest stars
- 5 See also
- 6 References
|Character||Portrayed by||First appearance||Seasons|
|Oliver Queen / Green Arrow||Stephen Amell||"Pilot"||Main|
|Laurel Lance / Black Canary (Earth-1)
Laurel Lance / Black Siren (Earth-2)
|Katie Cassidy||Main||Guest||Does not appear|
|"What We Leave Behind"||Does not appear||Recurring||Main|
|Tommy Merlyn||Colin Donnell||"Pilot"||Main||Guest||Does not appear|
|John Diggle / Spartan||David Ramsey||Main|
|Thea Queen / Speedy||Willa Holland||Main|
|Moira Queen||Susanna Thompson||Main||Guest||Does not appear||Guest||Does not appear|
|Quentin Lance||Paul Blackthorne||Main|
|Felicity Smoak / Overwatch||Emily Bett Rickards||"Lone Gunmen"||Recurring||Main|
|Roy Harper / Arsenal||Colton Haynes||"Dodger"||Recurring||Main||Guest||Does not appear|
|Slade Wilson / Deathstroke||Manu Bennett||"Betrayal"||Recurring||Main||Guest||Does not appear||Guest||Recurring|
|Malcolm Merlyn / Dark Archer||John Barrowman||"An Innocent Man"||Recurring||Guest||Main||Recurring||Does not appear|
|Curtis Holt / Mister Terrific||Echo Kellum||"The Candidate"||Does not appear||Recurring||Main|
|Adrian Chase / Prometheus||Josh Segarra||"A Matter of Trust"||Does not appear||Main||Does not appear|
|Rene Ramirez / Wild Dog||Rick Gonzalez||"Legacy"||Does not appear||Recurring||Main|
|Dinah Drake / Black Canary||Juliana Harkavy||"Who Are You?"||Does not appear||Recurring||Main|
Oliver Queen / Green Arrow
In season one, Oliver returns to Starling City after being presumed dead for five years, shipwrecked on the remote island of Lian Yu following the loss of his family yacht. He lives a dual life—rich playboy by day and vigilante by night, targeting individuals whose names appear in a notebook given to him by his now-deceased father, Robert Queen. He struggles to find a balance between his quest and reconnecting with his family (his sister Thea Queen and mother Moira Queen) and friends (best friend Tommy Merlyn and ex-girlfriend Laurel Lance).
In flashbacks set five years earlier, Oliver, Robert, and Sara Lance are aboard the Queen's Gambit when bad weather causes it to sink. During the shipwreck, Sara is sucked out to sea. Oliver and his father escape on a life raft but Robert shoots himself to increase Oliver's chances of survival, asking Oliver to "right his wrongs". Oliver eventually lands the raft on an island called Lian Yu. He soon discovers that he is not alone on the island as he is hunted by a mercenary group. With the help of allies, Slade Wilson, Yao Fei, and Shado, he begins to learn the skills needed to survive.
During season one, John Diggle and Felicity Smoak both become involved in his crusade. The vigilante team ultimately realizes the list of names is connected to a larger conspiracy called "The Undertaking", a scheme orchestrated by Malcolm Merlyn to destroy the poor and crime-ridden neighborhood of the Glades. Oliver fights and supposedly kills Malcolm but The Undertaking succeeds, leaving the Glades largely destroyed and 503 dead including Tommy Merlyn.
In season two, Oliver returns to Starling City after spending time at Lian Yu to work through his grief. He now goes by the alias "Arrow" and, in honor of Tommy, vows never to kill again. He fights criminals who take advantage of the Glades after its destruction, while trying to redeem himself as a hero, but is challenged when those closest to him are endangered. He co-administers Queen Consolidated with Isabel Rochev and becomes friends with Alderman Sebastian Blood. Oliver finds himself investigating a larger plot orchestrated by Slade Wilson, involving "Mirakuru", a strength-enhancing drug. It is Slade's intention to destroy everything and everyone Oliver cares for. Sebastian and Isabel are also working for Slade and help bankrupt Oliver, causing him to lose his home and business. Oliver gets help from Sara Lance, now the vigilante "Canary", and takes Thea's boyfriend, Roy Harper, as a protégé. After Felicity injects Slade with the Mirakuru cure, Oliver defeats Slade and locks him in an underground prison on Lian Yu. In flashbacks, Oliver is hunted by Dr. Ivo's armed crew who seek the Mirakuru and he accidentally causes the death of Shado, his lover on the island. Slade also loved Shado, which explains his vendetta against Oliver. A flashback before the shipwreck reveals that Oliver impregnated a girl named Samantha Clayton, and Moira paid Samantha to tell Oliver the child died and to move to Central City, leaving him unaware of his impending fatherhood.
In season three, Oliver has become a public hero to the citizens of Starling City and has taken Roy on as a full sidekick. He lives in his foundry safe-house, having lost his mansion. Oliver is faced with the moral question of whether he can be Oliver Queen and live his life while the city needs the Arrow. This is further challenged when he realizes he is in love with Felicity. She has caught the attention of Ray Palmer, the new head of Queen Consolidated. After Thea returns to Starling City, they decide to reopen their nightclub together. Oliver is also inadvertently embroiled in a conflict with Raʾs al Ghul due to Malcolm's manipulations. During a fight with Raʾs, he suffers a mortal wound and nearly dies, but is saved by Maseo and Tatsu Yamashiro. Raʾs demands that Oliver become his heir because he is the only man to survive a death match against him, fulfilling a prophecy of the League of Assassins. When Oliver rejects the offer, Raʾs tries to force him by killing people while posing as the Arrow. When Raʾs nearly kills Thea, Oliver chooses to join the League, abandoning his former identity to become Al Sah-him (Arabic: سهم; "Arrow"); he pretends to be a darker and crueler version of himself in order to get closer to Raʾs and destroy the League from within. Raʾs has Oliver marry his daughter, Nyssa al Ghul, to keep his bloodline in charge of the League. Oliver later kills Raʾs and inherits the mantle but immediately passes it to Malcolm. He decides to retire from being the Arrow and live with Felicity, knowing that Laurel, Diggle, Ray, and Thea will protect the city in his absence. The season flashbacks explore Oliver's time in Hong Kong where, after witnessing his combat capabilities on the island, Amanda Waller forces him to become an A.R.G.U.S. agent using the Yamashiros as his handlers. It is revealed that Oliver returned to Starling City while on a mission where he discovered Thea's drug problems, witnessed the start of the relationship between Laurel and Tommy, and saw Felicity two years before they eventually met.
In season four, Oliver is called from retirement to help Laurel and Thea stop a group known as "The Ghosts" led by Damien Darhk, leader of H.I.V.E. Oliver now goes by the name "Green Arrow", ostensibly a new vigilante following in the footsteps of the Arrow, who Star City (formerly Starling City) believes to have died. He plans to propose to Felicity and run for mayor. While on a mission with Barry Allen in Central City, Oliver meets Samantha Clayton's son, William, and ultimately learns that he is William's father. Samantha refuses to grant Oliver full access because of his playboy past and her ill feelings toward his mother. The revelations of his fatherhood complicates Oliver's relationship with Felicity and his duty as Green Arrow, and threatens to jeopardize his mayoral campaign. When a H.I.V.E. attack leaves Felicity permanently paraplegic, Oliver's fight with Darhk becomes a vendetta. Oliver also discovers that Thea is dying because the Pit's restorative effect on her is waning; Nyssa offers a cure in exchange for killing Malcolm. In a fight, Oliver cuts off Malcolm's left hand and gives the Demon's Head ring to Nyssa in exchange for the cure. Nyssa disbands the League of Assassins, causing Malcolm to seek vengeance against Oliver. As a result, Darhk kidnaps William, Oliver's relationship with Felicity becomes estranged, and Oliver is forced to resign from his mayoral campaign. After Darhk is successfully prosecuted, Malcolm, with help from Andy Diggle, aids Darhk's escape by restoring his magic, and fatally stabs Laurel with Oliver's arrow. Laurel dies of her injuries moments after admitting that she still loves Oliver, who is devastated. During his quest to stop Darhk, Oliver learns that the pure forces of light can counter Darhk's powers and that H.I.V.E. plans to rule a post-apocalyptic world. At the end of the season Oliver stops Darhk's plan to destroy the world and kills him. With the death of the previous mayor, Ruve Adams, Oliver becomes acting mayor of Star City. The season's flashbacks explore Oliver's training with A.R.G.U.S. and his infiltration of the Shadowspire organization on Lian Yu.
In season five, Oliver initially returns to killing because he blames himself for Laurel's death. He later recruits a team of vigilantes to help balance his double life as Green Arrow and Star City's mayor. In the process, he meets metahuman vigilante Dinah Drake, and sees her as a candidate to succeed Laurel as Black Canary, inspired to continue Laurel's legacy after encountering her evil Earth-2 counterpart. Oliver is stalked by a mysterious archer, Prometheus, who seeks vengeance for the death of his father by "The Hood". The season's flashbacks examine Oliver's time in Russia, where he joins the Bratva (Russian mafia) as part of an assassination plot against Konstantin Kovar and explores the criminal fraternity in the process. One of Raʾs al Ghul's children, Talia al Ghul, trains Oliver and gives him green garb based on the League of Assassin's uniforms. In the present, Talia seeks vengeance against Oliver for killing her father and allies with Prometheus, who was another of her students. After a series of battles with Prometheus, leading to the abductions of Oliver's family and friends, including Samantha and William, Oliver defeats his enemy at Lian Yu, though Prometheus kills himself afterward. William also learns of his relation to Oliver and discovers his father's secrets.
Laurel Lance / Black Canary / Black Siren
In season one, she is a lawyer for legal aid firm CNRI and Tommy Merlyn's girlfriend. When Oliver returns, she blames him for the death of her sister, Sara. She gradually comes to accept him upon learning of his suffering on Lian Yu, and remembering her sister's rebellious faults. This puts Laurel at odds with her father, Quentin. She occasionally works with the Hood/Arrow—unaware that he is Oliver—with cases the courts are unwilling to move on. Oliver and Laurel eventually rekindle their relationship after Tommy breaks up with her. Tommy dies saving Laurel when CNRI is destroyed along with much of the Glades.
In season two, Laurel is hired as an assistant district attorney, assigned to prosecute Moira Queen. Because of guilt over Tommy's death, she and Oliver decide to remain friends, and Laurel begins taking drugs and drinking while pushing friends and family away. Laurel eventually chooses sobriety after an argument with Oliver. Inspired by Sara's vigilante alter-ego, Canary, she regains her job as assistant district attorney. Learning from Slade Wilson that Oliver is the Arrow, Laurel confronts Oliver and decides to keep his secret, also deducing Sara's secret.
In season three, Laurel works to prosecute the criminals Oliver catches. Sara returns to Starling City and is killed in front of Laurel, who makes an amateurish attempt to replace her as the Canary. Oliver refuses to train her, so Laurel seeks former boxer and vigilante Ted Grant/Wildcat's help with combat training. Laurel does not tell Quentin about Sara's death until a near-death experience, resulting in their estrangement. She wears Sara's Canary jacket and eventually becomes the "Black Canary", partnering with Roy Harper. She learns that Malcolm is directly responsible for Sara's murder and tries to avenge Sara and Tommy's deaths. Nyssa saves her from Malcolm and furthers her training. Laurel gradually becomes a skilled combatant and Cisco Ramon provides her with an ultrasonic collar using components from both Sara's and Hartley Rathaway's weapons, improving Laurel's tactics with sonic weaponry. This collar, dubbed the "Canary Cry", becomes her primary weapon used to disorient enemies with an overwhelming scream, while Team Arrow use ear-pieces to shield them from the effect. After Raʾs al Ghul's defeat and Oliver's retirement, Laurel remains on Team Arrow defending Starling City.
In season four, Laurel and Thea realize they are outmatched against H.I.V.E. and they bring Oliver back. Laurel hopes to revive Sara in the same way Thea was resurrected; with help from Oliver and John Constantine, Laurel retrieves Sara's soul from the afterlife. Laurel discovers that Damien Darhk is extorting her father to work with H.I.V.E. Laurel is further frustrated at Oliver when she learns that he cheated on her, resulting in his having a son named William, but has no ill feelings towards William's mother, Samantha. During Darhk's attempted breakout, Laurel is stabbed with an arrow by Darhk as revenge against her father's betrayal. She later dies after making Oliver keep a promise to not let her be the last Canary, and confessing that she still loves him. Evelyn Sharp begins masquerading as Black Canary; her actions brand Black Canary as a criminal. Oliver saves Laurel's image by revealing her secret to the public. Laurel is later avenged when Oliver kills Darhk.
In season five, when Oliver, John, Thea, Sara, and Ray are abducted by the Dominators, they are placed in a shared hallucination where Laurel is alive; seeing "Laurel" allows Oliver and Sara to move on from her death. In the mid-season finale, Oliver discovers Laurel seemingly alive and well, but Felicity discovers she is actually Laurel's Earth-2 counterpart—Laurel Lance/"Black Siren", previously introduced in The Flash—and is working with Prometheus. Oliver hopes to help this Laurel find redemption, believing it to be the only way to forgive himself for Earth-1 Laurel's death. This Laurel was in love with Oliver on Earth-2, until his death 10 years ago; she moved to Central City to start a new life, only to become Black Siren when affected by Harrison Wells' particle accelerator, and then fell under Zoom's influence. Encountering Earth-2 Laurel also motivates Oliver to keep his promise to Earth-1 Laurel. Earth-2 Laurel works with Evelyn to kidnap the members of Team Arrow including Quentin. Laurel reveals to Quentin that, while she helps Adrian out of gratitude for freeing her from A.R.G.U.S., she is sentimental towards him as he is her father's Earth-1 counterpart. After the destruction of Lian Yu, Laurel's fate is unknown.
Actress Katie Cassidy is expected to again be a series regular during season six, portraying Laurel Lance / Black Siren, after appearing as the character in four guest appearances in season five.
Thomas "Tommy" Merlyn (portrayed by Colin Donnell) is Oliver's best friend and the son of Malcolm Merlyn. He shares his surname with the DC Comics character Merlyn. A version of Tommy was introduced as a former friend-turned-enemy of the titular character in the Green Arrow comics in The New 52.
In season one, Tommy is a spoiled playboy who lives off the financial support of his father. After his father cuts him off, Tommy manages Oliver's nightclub, Verdant, and dates Laurel. He learns Oliver's secret when Oliver, as the vigilante, saves Malcolm from assassins. Oliver and Tommy's relationship becomes strained with Tommy seeing Oliver as a killer. Tommy later breaks up with Laurel thinking that she belongs with Oliver. Tommy is killed rescuing Laurel from a collapsing building damaged by Malcolm's earthquake machine during the Undertaking.
In season two, Oliver vows never to kill again in Tommy's memory. During Oliver's fight with Cyrus Gold, he sees an image of Tommy, who calls him a hero and urges him to defeat his enemy. It is also revealed that he is the paternal half-brother of Thea Queen.
In season three, Tommy appears twice in flashbacks. In "Sara", he travels to Hong Kong looking for Oliver, but fails to find him. In "The Return", the episode shows him throwing himself a birthday party, trying to stop Thea from using drugs, and growing closer to Laurel. In season five, Tommy appears as a ghost in the Dominators's dream world as Oliver leaves it.
John Diggle / Spartan
John Thomas Diggle, Sr., (portrayed by David Ramsey) is a decorated former United States Army Special Forces soldier, honorably discharged with the rank of master sergeant, and Oliver's friend and partner. While John Diggle was originally a character created for the show, his popularity led to a character of the same name modeled after Ramsey's appearance to be created for the Green Arrow comics in The New 52. While elements from the Arrow TV series were removed after issue 40, John appeared again following the relaunching of the series as part of DC Rebirth.
During season one, John is hired as Oliver's bodyguard and becomes his confidant in his mission to save Starling City. John tries to help Oliver balance his normal life and vigilante life, and occasionally helps him in the field. John provides Oliver with medical assistance, limiting his need for hospital treatment. Already a skilled fighter, John receives additional training from Oliver. John has a grudge against Floyd Lawton / Deadshot who killed his brother, Andy. John dates his brother's widow, Carly, and is a father figure to her son, A.J., during this season.
In season two, John and Felicity continue to help Oliver with his crusade and John continues to be Oliver's adviser and field partner, along with Sara and Roy. John has a relationship with his ex-wife Lyla Michaels, is an unofficial member of A.R.G.U.S., and is a member of the Suicide Squad under the codename "Freelancer". He also develops an uneasy alliance with Amanda Waller who occasionally asks him for field assistance with A.R.G.U.S. missions. It is revealed that Lyla is pregnant with John's child.
In season three, John continues to help Oliver and his team, but has to devote more of his time to his new baby with Lyla, whom he names Sara after Sara Lance is killed. After Lyla is seriously injured in an attack, they decide to remarry. When Oliver is presumed dead at Raʾs al Ghul's hands, John leads Felicity, Roy, and Laurel until his friend's return. After Oliver's return, John accompanies him to Nanda Parbat to help him free Malcolm, but the two are captured. John and Lyla marry after a near-death experience with the Suicide Squad, when Deadshot sacrifices himself for them. John and Lyla decide to quit Team Arrow and A.R.G.U.S. for their daughter's sake. After Oliver leaves the team to join the League of Assassins as part of a deal to revive a deceased Thea, John becomes the team leader, though he is not yet ready to forgive Oliver for kidnapping Lyla as part of a deception to gain acceptance by the League.
In season four, John, going by the codename "Spartan", discovers that the organization that targets Star City is H.I.V.E., who have hired Lawton to murder John's brother, Andy. John eventually forgives Oliver after their fight with a H.I.V.E. metahuman operative named Jeremy Tell. With Quentin Lance's help, John learns that Damien Darhk had Andy murdered, and that he was a drug cartel leader and Darhk's territorial rival prior to his death. However, John discovers that Darhk actually faked Andy's death and recruited him as a H.I.V.E. soldier, leading John and his brother to become enemies. Guilt-ridden over his brother's role in causing Laurel's death, John seeks revenge against Andy and Darhk. John kills his brother after Andy nearly causes Lyla and Sara to be killed. He initially lies to Lyla, saying that he killed Andy in self-defense, but Oliver encourages John to admit the truth to his wife. John rejoins the US Army after confiding to his wife and Darhk's defeat.
In season five, John is betrayed by his commanding officer, J.G. Walker, following a failed attempt to sell nuclear weapons. John is framed for Walker's crimes; Oliver and Lyla break him out of state prison, and John stays at H.I.V.E.'s former base until his innocence can be proven. John remains guilty about killing Andy and continues to serve as Spartan to redeem himself. Due to the events of The Flash episode "Flashpoint", John's family history is altered: his daughter Sara has been erased from existence and replaced by John "J.J." Diggle, Jr., as a result of a timeline change caused by Eobard Thawne, correcting the Flashpoint reality created by Barry. John eventually learns of the alteration of his life, his daughter's erasure and his son's status as a time aberration, and despite the hurt caused by these circumstances, he chooses to forgive Barry. Lyla, however, distrusts and possibly hates Barry for this. Felicity is able to prove John's innocence by restoring the digital files that Walker had destroyed. However, Andy's betrayal and death at John's hands has taken a toll on him; he struggles to control his rage and occasionally pulverizes criminals to vent it, fueling Oliver's concern over his erratic behavior. John later befriends Oliver's chosen successor to Laurel's mantle, Dinah Drake, a Central City detective, and encourages her to set down roots in Star City. By the end of season five, John's fate is unknown due to the destruction of Lian Yu caused by Adrian Chase.
Thea Queen / Speedy
Thea Dearden Queen (portrayed by Willa Holland) is the daughter of Moira Queen and Malcolm Merlyn, though both Malcolm and Thea were unaware of their relation to each other until season two, and the younger half-sister to Oliver Queen and Tommy Merlyn. Her brother's nickname for her and later hero persona ("Speedy"), her middle name of Dearden and the alias "Mia" she used during her time at Corto Maltese, are easter egg connections to one of Green Arrow's sidekicks in the comics.
In season one, Thea is battling a drug and alcohol problem which she used to fill the pain of losing her brother. After court-ordered community service from taking "Vertigo", she grows to be more responsible. Thea's addiction with Vertigo causes a bitter animosity between Oliver's vigilante alter-ego and the drug's creator, The Count. She also falls in love with Roy Harper, a lifelong street criminal who she meets when he steals her purse. Though he initially has no romantic interest in Thea despite an obvious physical attraction to her, mainly out of resentment of her wealth, Roy later begins to genuinely fall in love with her.
In season two, Thea runs the Verdant nightclub in Oliver and Tommy's absences and continues seeing Roy, but is frustrated by Roy's need to save people, though she gradually comes to accept it. She is the subject of exclusion as most characters keep secrets from her including her true paternity which she eventually discovers when Slade Wilson abducts her. She breaks up with Roy when he cheats on her, though he only does this to keep her away from him during his Mirakuru problem. Despite reconciling with Roy after having learned of his illness, she breaks up with him again after discovering his allegiance to the Arrow. After her mother's death, she decides to leave Starling City. Malcolm comes to save her and convinces her to leave with him.
In season three, Thea is in Corto Maltese receiving combat training from Malcolm, though she soon decides to return to Starling with Oliver. She reopens her nightclub after Malcolm secretly buys the foundry from Queen Consolidated for her. She learns Oliver's secret identity as the Arrow when he shows her his hideout under the nightclub and begins to distrust Malcolm after learning that he already knew Oliver's secret. After Thea is told that her father used her as a pawn against both Oliver and Raʾs al Ghul by drugging and manipulating her into killing Sara Lance, she arranges for him to be captured by the League in retaliation. She reconciles with Roy but is nearly killed by Raʾs and brought back to life in the Lazarus Pit in exchange for Oliver joining the League of Assassins. Thea blames herself for letting her brother join the League. Roy breaks up with her when he leaves Starling City after faking his death, hoping that Thea can make a life of her own without him. He also leaves her his red costume which she wears to become a vigilante herself as his successor.
In season four, Thea works with Oliver and his friends in the fight against the terrorist organization H.I.V.E. as "Speedy". Despite the enjoyment of being a vigilante, Thea's behavior becomes increasingly volatile and reckless when in the field, which Oliver realizes is a side effect of being in the Lazarus Pit. Thea helps Laurel to bring Sara back from death in hopes of making amends towards the Lance family. Because of this, Thea becomes telepathically linked with Sara for a period after her resurrection in the Lazarus Pit. It is also revealed that Thea's Lazarus Pit side effect is able to counteract Damien Darhk's life force drain, temporarily relieving her bloodlust. Thea begins to die as the Pit's restorative effect wanes. With Tatsu Yamashiro's help, Nyssa al Ghul gives Oliver the "Lotus", an elixir used by the Crescent Order that permanently reverses the effects of the Lazarus Pit, saving her life. Thea learns that Oliver is William's father, and that her mother had known and kept it a secret from them all. Thea meets William after Darhk kidnaps him, but she and Oliver are unable to acknowledge their relation to William due to their mother's actions and for the boy's safety. Darhk's wife, Ruvé Adams, eventually brainwashes Thea's new boyfriend, Alex Davis, into kidnapping her to a miniaturized H.I.V.E. facility built from stolen technology belonging to Ray Palmer.
In season five, Thea now works as Oliver's mayoral chief-of-staff, and is adamant about retiring from being a vigilante after Oliver kills a number of Tobias Church's thugs. She hires Quentin as deputy mayor and helps him beat his alcoholism. However, working to help her brother politically puts Thea at risk of taking her mother's immoral path; she ruins the reporter career of Oliver's new love interest, Susan Williams, but Felicity is able to rectify her mistake. She resigns from her position soon afterwards and occasionally resumes her vigilante role when needed. By the end of season five, Thea's fate is unknown due to the destruction of Lian Yu caused by Adrian Chase.
Moira Queen (portrayed by Susanna Thompson) is the mother of Oliver and Thea, the former acting CEO of Queen Consolidated, mayoral candidate and wife of Robert Queen and later Walter Steele. She also had a brief affair with Malcolm Merlyn after his wife's death, which resulted in Thea's birth. She is based on the minor DC Comics character of the same name.
In season one, Moira is involved in "The Undertaking", a criminal conspiracy orchestrated by Malcolm to destroy the Glades, with him forcing Moira to handle all interference and supply him with the resources needed. Her involvement causes her to keep many secrets from her family which, when revealed, causes Walter to divorce her and her kids to become distant. Moira eventually confesses her involvement and Malcolm's, which results in her arrest.
In season two, Moira is put on trial but she is acquitted as Malcolm returns, alive. She makes Malcolm go on the run by informing Raʾs al Ghul of his survival. Moira eventually becomes a mayoral candidate against Sebastian Blood on Walter's advice, but the secret of Thea's parentage is revealed, causing a rift between Moira and her children. It is revealed that she had been aware of Oliver's secret identity as the Arrow since the night of her arrest. She is murdered by Slade Wilson as part of his revenge plot against Oliver. In a flashback, Moira paid Samantha Clayton to tell Oliver she lost their baby and to move away to Central City.
In season three, Moira's voice is briefly heard when Oliver calls home from Hong Kong. In season four, Samantha reveals she never cashed Moira's check, and the attempted bribe resulted in Samantha hating Moira; as a result, Samantha denied Moira access to her grandson, William. Oliver is hurt when he finds out, and angry with Moira for the deception.
Quentin Larry Lance (portrayed by Paul Blackthorne) is a deputy mayor, former police detective and captain, the father of Laurel and Sara, and former husband of Dinah Lance. He is based on the DC Comics character Larry Lance, husband to Dinah Drake Lance and father to Dinah Laurel Lance.
In season one, Quentin resents Oliver for causing Sara's death, becoming an alcoholic who throws himself into his work to avoid the pain. After Oliver returns, he openly shows his hatred of him and also hates the Arrow for being against everything Quentin believes in. Quentin attempts numerous times to arrest him, one time using Laurel, which causes her to be distant for a time. He works with the Arrow from time to time and eventually comes to accept him.
In season two, Quentin is demoted to officer; an ally to the Arrow, Quentin becomes his informant and occasional field partner on cases. He struggles to recover from his alcoholism and repair the relationships with his family. After Quentin discovers Sara is alive and the vigilante "Canary", he helps her adjust to life in Starling City. He helps Laurel cope with her pain over losing Tommy, and seeks to rekindle his relationship with Dinah, but she has moved on after their divorce. Quentin later regains his detective title. Following a battle with Slade's forces, Quentin passes out from internal bleeding and falls into a coma.
In season three, Quentin is in recovery, with frequent chest pains, and has been promoted to captain; he uses this authority to disband the anti-vigilante task force. His condition is strained due to assisting the Arrow in the field, and he relies on his new political connections and his subordinates to continue serving the city. Although Laurel kept the information from him, he ultimately learns the truth about Sara's death and Laurel becoming her vigilante successor. Quentin becomes estranged from Laurel and relapses in his alcoholism. He blames the Arrow for Sara's death and is determined to bring him to justice; he learns of Oliver's secret identity from Raʾs al Ghul. Quentin supports Team Arrow when Raʾs plans to unleash the bio-weapon on Starling.
In season four, Quentin is forced to work with H.I.V.E. after Darhk threatens the lives of his family. Oliver discovers this and persuades Lance to become a double agent and report information on Darhk. Darhk gradually becomes suspicious of Quentin, who discovers the source of Darhk's supernatural powers: an ancient artifact. With this information, Mari McCabe destroys Darhk's idol, leaving him powerless. Quentin publicly admits in court his association with H.I.V.E. under Darhk's duress, determined to see justice served, despite endangering his career. He reconciles with Laurel and reunites with Sara after she is brought back from the dead. Quentin begins seeing Donna Smoak, Felicity's mother. After Darhk murders Laurel, Quentin seeks to bring her back the same way Sara returned, only to learn from Nyssa that the Lazarus Pit was destroyed shortly after Sara's return. With Donna's support, Quentin copes with his loss without succumbing to alcoholism. After saving the city with Oliver, Quentin is fired and decides to leave Star City with Donna.
By season five, Quentin has broken up with Donna and, now having no one left, returns to Star City and falls back into alcoholism. With encouragement from Oliver, Quentin begins reforming Star City's police force as deputy mayor, working with the Green Arrow to reduce the city's rising crime rate. Quentin also formed the Anti-Crime Unit to combat serious crimes prior to his dismissal from the police, and leads them under his new position when needed, though this puts him at odds with his former colleagues. However, after Evelyn Sharp's fight with Prometheus, Felicity discovers that the shurikens Prometheus used were made from Oliver's old arrow heads stolen from the police evidence lockup, and Quentin finds cuts on him that implicate him and raise doubts of his sanity. Quentin eventually learns that Adrian Chase is Prometheus and responsible for attempting to frame him. Thea convinces Quentin to seek help at rehab after realizing how much Laurel's death is affecting him, and holds the position of deputy mayor for when he recovers. After resuming his position, Quentin befriends one of Oliver's protégés, Rene Ramirez, after Quentin learns of his past encounter with a young Rene when Quentin was a beat officer, and offers Rene a job as his assistant. He also befriends Oliver's chosen successor for the Black Canary mantle, Dinah Drake. When Dinah expresses her hesitance at accepting Laurel's mantle, Quentin gives Dinah his blessing, saying it is what Laurel would want. Quentin later encounters Earth-2 Laurel and is disturbed to see what his own daughter could have potentially become. By the end of season five, Quentin's fate is unknown due to the destruction of Lian Yu caused by Adrian Chase.
Felicity Smoak / Overwatch
Felicity Megan Smoak (portrayed by Emily Bett Rickards) is an I.T. expert, a partner (and eventual love interest) of Oliver Queen. Felicity is a MIT graduate with a master's degree in cyber security and computer sciences, and ranked second in the National Information Technology Competition at age 19. Felicity was raised by her mother, Donna Smoak, who left her father Noah Kuttler when Felicity was seven years old due to his life as a criminal. During season one, she is initially an employee of Queen Consolidated, asked by Walter to investigate the list and by Oliver for occasional favors. She learns Oliver's secret when he is shot and has her take him to his lair where she and John patch him up. She stays on as Oliver's computer expert in hopes of finding Walter Steele by helping Oliver, and becomes one of Oliver's confidants. Felicity chooses to remain at Oliver's side after Walter is rescued.
In season two, she continues to serve as Oliver's partner, upgrades his safehouse, and has a custom bow made for him. Felicity also helps in the field as a decoy or to field-hack a computer, but sometimes gets herself in deeper trouble. Felicity and Oliver also start to develop romantic feelings towards each other despite the fact that he is in a relationship with Sara Lance at the time.
In season three, Felicity continues to be Oliver's tech support but has been forced to work for another company after losing her Queen Consolidated job. She eventually returns to work at Queen Consolidated (renamed Palmer Technologies) under new CEO Ray Palmer as his vice president. Felicity becomes conflicted by her feelings towards both Oliver and Ray. While Ray and Felicity become a couple, many people, including her mother, see that Felicity is in love with Oliver. Felicity finally admits her love to Oliver and the two consummate their relationship. However, Oliver's decision to join the League of Assassins causes a rift between them. At the end of the season, Oliver retires from being the Arrow and he and Felicity leave Starling City to start a new life. In flashbacks, it is revealed that she was a part of the cybergoth subculture and a member of a hacktivist group on her college campus.
In season four, Felicity becomes Palmer Technologies' acting CEO after Ray's presumed death; she becomes friends with one of its scientists, Curtis Holt. After living in Ivy Town for several months, she and Oliver return to Star City to help with the 'Ghost' problem. Felicity is the first person—before Laurel and Sara—to find out that her mother is dating their father. She and Oliver become engaged, but are attacked by H.I.V.E, resulting in Felicity being shot and left permanently paralyzed from the waist down. After coming to terms with her paralysis and her rebellious past, Felicity is given the codename "Overwatch" by Oliver. Felicity is reunited with her father after eighteen years, but learning that he is cyber-criminal mastermind the Calculator, Felicity has Quentin arrest him. With Curtis's help, Felicity's mobility is restored after a chip is surgically implanted in her spine. She learns of Oliver's secret child with Samantha Clayton, leading to her breaking off their romantic relationship. Later, after an encounter with the villain "Cupid", Felicity leaves the team until Laurel's death motivates her to return. Felicity decides to dedicate Palmer Technologies' innovations to help people, which causes her to lose her position as CEO. The season ends with Felicity and Oliver the only ones remaining in the destroyed lair.
In season five, Felicity continues to assist Oliver, and convinces him to build a new team, recruiting Curtis Holt, Rene Ramirez, Evelyn Sharp, Rory Regan, and Dinah Drake. She also dates police detective Billy Malone. When Billy is killed by Oliver in an accident planned by Prometheus, she seeks revenge and joins a hacker group called Helix. When Prometheus traps both Felicity and Oliver under their lair, the pair begin to reconcile after Oliver admits he trusts her but not himself. Felicity comes to understand the complexity of the decisions Oliver has made, and apologizes to him for her own hypocrisy. By the end of season five, Felicity's fate is unknown due to the destruction of Lian Yu caused by Adrian Chase.
A character by the same name appeared in the comics as Ronnie Raymond's step-mother who runs a software company. A version based on Rickards' portrayal was introduced in the DC Comics universe in Green Arrow (vol. 5) #35.
Roy Harper / Arsenal
In season one, Roy is a small-time criminal who falls in love with Thea after robbing her, and is arrested multiple times by Quentin Lance. He does not see any other way to live until the Arrow saves him from a kidnapping, after which Roy attempts to find the Arrow to help him. Roy later works as a waiter at Verdant.
In season two, Roy often goes out to clean up the streets, until the Arrow convinces him to gather intelligence instead. After being injected with Mirakuru, Roy gains super strength but slowly loses his sanity. The Arrow reveals his identity when Oliver convinces Roy to stop Bronze Tiger. Roy trains with Oliver in order to control his strength, but is forced to break up with Thea. Slade kidnaps Roy to use his blood to create his army, leaving Roy completely insane and causing him to go on a rampage, killing a cop. Roy takes part in the season finale's battle, with his own mask, but he is slightly amnesiac, not remembering anything after breaking up with Thea.
In season three, Roy is Oliver's partner and participates with him in the field. He takes on the alter-ego "Arsenal", though the media also refers to him as "Red Arrow". Thea makes Roy her assistant manager at Verdant, and they eventually get back together. Sara's murder brings the repressed memories of his ramage to the surface and Roy supports the family of the police officer he killed. When Oliver is presumed dead, Roy takes his place as the team's head archer, often teaming with Laurel on missions. After Quentin Lance resumes his manhunt against Arrow, Roy subsequently impersonates Oliver's alter-ego and fakes his own death, leaving Starling City to assume that Arrow is dead so that Oliver can be free. Roy passes on his Arsenal suit to Thea after leaving town.
In season four, after building a new life in Hub City, Roy returns to his vigilante role after the Calculator extorts him to steal technological components and Thea is out of commission. In season five, Roy appears as a hologram when Oliver is about to leave the Dominators' simulated dream world.
Slade Wilson / Deathstroke
Slade Wilson (portrayed by Manu Bennett) is one of the world's deadliest assassins and mercenaries, a former Australian Secret Intelligence Service (ASIS) operative, and the mentor-turned-archenemy of Oliver Queen. He is based on the DC Comics character of the same name.
In season one flashbacks, Slade is a combat mentor to Oliver on Lian Yu and teaches him to fight Edward Fyers and his mercenaries in their attempts to escape the island and stop Fyers' plans. Though Slade openly doubts Oliver's abilities to survive or fight, often giving him demeaning nicknames, the two become close friends and fight together well. He also becomes romantically drawn to Shado.
In season two flashbacks, he is severely wounded by Dr. Ivo's mortar attacks and Oliver injects him with Mirakuru, a strength-enhancing serum left on the island in WWII by Japan, in order to save his life. When Shado is killed, Slade blames Oliver for her death and turns on him. In the present, Slade is alive, now operating as the mercenary "Deathstroke", and plots to destroy Starling City with an army of Mirakuru soldiers working with Sebastian Blood and Isabel Rochev. He undermines Oliver's life by causing him to lose his money and his business, revealing some of Oliver's secrets to Laurel and Thea and killing Moira before unleashing his army on the city. Oliver defeats him when Felicity injects him with the Mirakuru cure and he is imprisoned in an A.R.G.U.S. supermax prison on Lian Yu.
In season three, having been temporarily released by Malcolm Merlyn, Slade attempts to imprison Oliver and Thea in the supermax and return to Starling but the two are able to beat him.
In season five, Deathstroke appears in a hallucination created by the Dominators, where he serves as a countermeasure to prevent Oliver and his friends from escaping. Bennett did not portray the character in the episode. Bennett would later reprise the role for the final two episodes of the season, appearing in a cameo in "Missing" and appearing as a major character in the finale. Slade's fate is unknown due to Lian Yu's destruction.
Malcolm Merlyn / Dark Archer
Malcolm Merlyn (portrayed by John Barrowman), born Arthur King, is a wealthy businessman, member of the League of Assassins, father of Tommy and Thea and one of the main antagonists of the series. During season one, Malcolm plots the Undertaking, the destruction of the Glades using an earthquake device, after his wife Rebecca was murdered there. When Robert Queen earlier threatened the Undertaking, Malcolm arranged to destroy Robert's ship, Queen's Gambit, resulting in Robert's death and indirectly leading to Oliver and Sara becoming the Arrow and the Canary. In the main story of season one, he uses Moira to gain access to the resources needed for the Undertaking. He tries to reshape Tommy into a better person by cutting him off which works but causes tensions between them. When the Arrow interferes with his plan, Malcolm becomes a vigilante called "Dark Archer" to oppose him and proves to be far more skilled. He suspects Oliver to be the Arrow and is proven right after defeating him a second time. In the season finale, Malcolm is seemingly killed by Oliver though he manages to destroy much of the Glades, inadvertently kills Tommy, and is publicly exposed for his crime by Moira.
In season two, Malcolm returns to suborn the jury in Moira's trial to find her innocent of the Undertaking. He discovers that he is Thea's biological father, following Adam Donner's discovery of Malcolm's affair with Moira. In an attempt to keep Malcolm from Thea, Moira informs Raʾs al Ghul of his survival, forcing Malcolm to flee Starling City. During Slade's attack on the city, Malcolm returns to save Thea from the Mirakuru soldiers and convinces her to leave Starling with him.
In season three, Malcolm is revealed to have trained Thea to be a warrior in Corto Maltese. Despite being both the League's target and a fugitive of the law, Malcolm secretly returns to Starling City, using personal wealth and resources following the loss of his company. Under an alias, Malcolm purchases the foundry from Queen Consolidated, the site of Thea's nightclub, Verdant. It is revealed that his name in the League of Assassins is "Al Sa-Her" (Arabic: الساحر), which translates to "The Magician". He continues to train Thea until she can defeat him in combat. Malcolm plots the death of Raʾs to eliminate his blood debt, and manipulates Thea into killing Sara so that Oliver will take the fall for her murder and challenge Raʾs to a duel; this plan fails and almost gets Oliver killed. Malcolm learns that crime lord Danny Brickwell was responsible for the murder of his wife, but Oliver persuades him to choose justice over vengeance for Thea's sake, allowing Brickwell to be tried for his crimes. Malcolm trains Oliver in swordplay in preparation of battling Raʾs together. When Oliver tells Thea that Malcolm brainwashed her into killing Sara, she betrays Malcolm to the League; he is captured and tortured, but freed from Nanda Parbat when Oliver takes the place of Raʾs. After Thea is killed by Raʾs, Malcolm accompanies Oliver to Nanda Parbat to revive her but Oliver is forced to join the League. Malcolm secretly works with Oliver to cripple the League from within and stop the plan of Raʾs to unleash the Alpha/Omega bio-weapon on Starling City. Malcolm leads Team Arrow to save the city until Oliver's return. After Raʾs is killed by Oliver in a final sword fight, he passes leadership of the League to Malcolm, which Nyssa suspects had been Malcolm's scheme all along. Despite their renewed animosity, both Malcolm and Oliver harbor deep respect for each other: Malcolm regards Oliver as a surrogate son and Oliver himself remembers the man Malcolm was before the death of his wife.
In season four, Malcolm helps Laurel resurrect Sara in order to settle his family's blood debt with Laurel, and helps Thea control her bloodlust. He provides information to Oliver and Barry Allen about Vandal Savage. To keep Darhk from learning Oliver's secret, Malcolm masquerades as Green Arrow. However, despite occasionally helping Oliver, Malcolm remains an amoral man and is despised by Oliver's team and their allies. Malcolm's aid to Oliver is either for protecting Thea or for his own agendas. Malcolm ultimately loses both his left hand and his power after Nyssa wins the League's leadership with Oliver's help, leading Malcolm to align himself with Darhk for revenge against Oliver. In the process, Malcolm reveals Oliver's secrets to Darhk. As a result, Darhk makes Malcolm a H.I.V.E. member and provides a cybernetic prosthesis. In order to protect himself and Thea from Damien's plans, Malcolm steals Damien's idol, working with Andy Diggle, which results in Laurel's death. Malcolm remains a leader to disbanded remnants of the League. Malcolm allies with Team Arrow again when Darhk tries to destroy the world without the means to survive it.
In season five, an illusion of Malcolm appears in the Dominators' dream world and opposes Oliver, Thea, John, Ray and Sara when they try to leave, but is swiftly killed by Thea. Malcolm appears in flashbacks working with Konstantin Kovar, giving him sarin gas in exchange for the means to acquire information on Unidac Industries to build the earthquake device. Malcolm returns in the penultimate episode of season five, offering Oliver his assistance in saving his friends, most importantly Thea. After Malcolm frees Thea, Felicity, Curtis and Samantha, Thea accidentally steps on a landmine. As Captain Boomerang approaches them, Malcolm takes Thea's place, telling the others to run. As they run, the landmine is seen exploding in the distance, presumably killing Malcolm and Captain Boomerang.
Malcolm Merlyn is based on the DC Comics character of the same birth name and is the main antagonist of season one.
Curtis Holt / Mister Terrific
Curtis Holt (portrayed by Echo Kellum) is a technological savant, inventor, and bronze-medal-winning Olympic decathlete, who works with Felicity at Palmer Technologies. In season four, he helps her rescue Ray Palmer from Damien Darhk. He later learns Oliver's secret identity and helps them defeat Brie Larvan. He then helps Felicity and Noah shut down Rubicon to stop H.I.V.E.
He officially joins the team in season five as part of Oliver's efforts to expand and accept help after Diggle and Thea retired. While in the field, Curtis adopts a costume similar to his comic counterpart, including his 'Fair Play' jacket and T-shaped mask. He alternates between field work and tech support depending on the crisis, such as helping Felicity devise a means of translating the extraterrestrial technology during the Dominators' invasion. In the mid-season finale, "What We Leave Behind", Curtis is hospitalized after he is shot with a tuberculosis vaccine by new villain Prometheus, aided by the treachery of apparent teammate Evelyn Sharp. Curtis's husband Paul leaves him after discovering his vigilante activities, and they eventually divorce. At the end of season five, Curtis' fate is unknown due to the destruction of Lian Yu caused by Adrian Chase.
He based on the DC Comics character Mister Terrific
Adrian Chase / Prometheus
Adrian Chase (portrayed by Josh Segarra) is the new Star City district attorney in season five who helps Mayor Oliver Queen clean up the streets through the justice system. Chase is also Prometheus, a ruthless and mysterious hooded archer who kills, and has a grudge against Oliver Queen/Green Arrow. He wears a black uniform almost identical to the Green Arrow's. Prometheus is aware of Oliver's identity, having deduced that the Green Arrow was the presumably-deceased Hood/Arrow, and begins a killing spree of innocent people with arrows and shurikens made from Oliver's discarded bolts. Prometheus has no tolerance for anyone else targeting Green Arrow and kills Tobias Church when he ignores a warning to leave Green Arrow alone. He also targets those close to Oliver by framing Quentin Lance, manipulating Evelyn Sharp into betraying Oliver, staging Billy Malone in his uniform to be killed by Oliver, and sends Laurel Lance's interdimensional doppelgänger Black Siren to tarnish Oliver's memories of her.
Prometheus is the illegitimate son of Justin Claybourne, a pharmaceutical owner on the List who was killed by Oliver during his first year as the Hood. It is eventually revealed that Adrian's birth name is Simon Morrison, and that he was taught by Talia al Ghul to gain a skillset to match Oliver's. Despite seeking revenge against Oliver, Adrian was never close to his father who realized that Adrian is psychopathic and wanted nothing to do with him. After Adrian and his allies kidnap Oliver's friends and family to Lian Yu, Oliver's party ultimately beats Adrian's. Unwilling to accept defeat, Adrian kills himself, detonating the bombs throughout the island in an attempt to kill Oliver's loved ones.
On why Adrian is not Vigilante, as in the comics, Guggenheim stated,
We knew we were going to do Vigilante this year, we knew who the character of Prometheus was, we knew that the character of Prometheus was the son of one of Oliver's early kills in season one, we knew that he was going to be someone who was going to indoctrinate himself into Oliver's good graces in the mayor's office and eventually betray him. One morning... it occurred to me that if we called this character Adrian Chase, and we made him a district attorney, everyone would be so focused on when he becomes Vigilante that they wouldn't be expecting that he really was Prometheus.
Rene Ramirez / Wild Dog
Rene Ramirez (portrayed by Rick Gonzalez) is a vigilante in Star City whose reckless and cocksure actions prompt the Green Arrow to guide him. His vigilante attire consists of normal clothes, with a hockey mask to hide his identity; the red dog image on the shirt of his uniform, led to his gaining the moniker of "Wild Dog". Prior to becoming a vigilante, Rene kills a criminal in defense of his family, which led to his wife's death during the altercation; his daughter was put in a foster care due to the community deeming him unfit as he succumbs to alcohol blackouts. With Curtis Holt's help, Rene seeks legal actions to get his daughter back. He later becomes Quentin Lance's assistant to help him reform Star City politically and they become friends.
Gonzalez is expected to be promoted to the main cast for the sixth season.
He is based on the DC Comics character Wild Dog.
Dinah Drake / Black Canary
Dinah Drake (portrayed by Juliana Harkavy) is a detective, formerly of Central City Police Department. She went undercover in a drug ring with the alias "Tina Boland", only for her partner to be murdered after they were both revealed to be cops. After the particle accelerator explosion, she receives the ability to produce sonic waves with her scream and hunts down the leader of the drug ring to get revenge for her partner's death. Oliver and his team seek to recruit Drake as a candidate to succeed Laurel Lance as Black Canary. Dinah joined the Star City Police Department after she settled in the city.
Harkavy is expected to be promoted to the main cast for the sixth season.
She is based on the DC Comics character Black Canary.
The following is a list of recurring actors who portrayed significant characters in multiple episodes, sometimes across multiple seasons. The characters are listed in alphabetical order by actor and grouped by the season in which they first appeared.
Introduced in season one
- Audrey Marie Anderson portrays Lyla Michaels, an A.R.G.U.S. agent and John Diggle's wife who served with him in Afghanistan where they first met. Within A.R.G.U.S. she uses the codename "Harbinger" and is the field leader of the Suicide Squad. Lyla and John also have a child, born in season three, who they name Sara in honor of Sara Lance. (The child is later changed to a son, John Jr., following the events of "Flashpoint".) Lyla and Sara are kidnapped by Oliver when he masquerades as a devoted League of Assassins member called Al Sah-Him. Though this strains the friendship between John and Oliver when the truth comes out, Lyla understands that it was necessary in his battle to destroy Raʾs al Ghul and the League. In season four, after Amanda Waller's death, Lyla becomes her successor as leader of A.R.G.U.S. and works to reform the organization. While she primarily aids Team Arrow, Lyla occasionally makes appearances in The Flash to aid Team Flash when A.R.G.U.S. faces metahuman threats. However, due to the events of The Flash episode "Flashpoint", Lyla learns of the alteration of her life with her husband, leading her to distrust the Flash.
- Jessica De Gouw portrays Helena Bertinelli / Huntress, who seeks revenge against her mob boss father and his associates for murdering her fiancé. Oliver makes a connection with her and tries to help her. They develop feelings for each other until Helena realizes Oliver still has feelings for Laurel, causing a rift. Helena's revenge is thwarted by Oliver, who puts her father in jail, making an enemy of her.
- Sebastian Dunn portrays Edward Fyers, a mercenary on Lian Yu seen during the season one flashbacks. He is killed in battle on the island. In season three, it is revealed that Fyers worked for Amanda Waller.
- Adrian Holmes portrays Franklin "Frank" Pike, a police lieutenant and Quentin Lance's superior. By the fifth season, Pike has been promoted to captain of police.
- Kelly Hu portrays Chien Na Wei / China White, a Chinese Triad leader who seeks revenge against Arrow for defeating her in combat during their first encounter. However, Oliver actually met her in Hong Kong two years prior, shown during the season three flashbacks. He helps capture her when she comes to Starling City. In season five, she escaped from prison with Carrie Cutter and Liza Warner but is later recaptured by Green Arrow and his team; she knows that that the Green Arrow is really her nemesis, the Arrow.
- Celina Jade portrays Shado, the daughter of Yao Fei. She helps train Oliver in archery and martial arts while on Lian Yu in the season one flashbacks; they become lovers. She is killed by Ivo during the season two flashbacks. Slade, who had secretly been in love with her, blames Oliver for her death and vows revenge. She later appears in Slade's hallucinations in the present time. Jade also portrayed Shado's twin sister, Mei, who Oliver meets in Hong Kong during a season three flashback. She also appears as a hallucination in season four during Oliver's second stay on Lian Yu.
- Alex Kingston portrays Dinah Lance, mother of Laurel and Sara, and former wife of Quentin. Dinah is a European history professor. Prior to Sara's disappearance, Dinah learned of her youngest daughter's relationship with Oliver, and is guilt-ridden for failing to stop her after the incident. After Sara's presumed death, Dinah's marriage with Quentin deteriorates and they divorce. She then leaves her family to find her daughter, correctly believing that she is alive. Dinah remarries after settling in Central City. Despite separating herself from Quentin after Sara's return, Dinah remains close to him and their daughters, and encourages Quentin to move on from their past.
- Byron Mann portrays Yao Fei Gulong, a skilled former Chinese general who assists Oliver on Lian Yu during season one. Yao Fei was framed for the massacre of a Chinese village by his superiors and sent to Lian Yu as punishment. He was found there by Edward Fyers who used Yao Fei's daughter Shado as leverage to extort his help bringing down a commercial airliner. During an escape attempt Yao Fei encountered Oliver who he sheltered and taught survival skills, and brought him to Slade Wilson and Shado to teach him combat and archery, respectively. Yao Fei is killed by Fyers in the season one finale. In the season five flashbacks it is revealed that Yao Fei was taught by Talia al Ghul. The character's name was derived from a DC Comics superhero character.
- Michael Rowe portrays Floyd Lawton / Deadshot, a mercenary who killed Andy Diggle under H.I.V.E.'s orders. Lawton is also a member of the Suicide Squad, although he is killed on a mission in season three. In season four it is revealed that Lawton did not kill Andy, but was used by H.I.V.E. to fake Andy's death.
- Colin Salmon portrays Walter Steele, Moira's husband, Oliver's step-father, and Felicity's former employer. He was president of Queen Consolidated until he disappeared in episode 9, but was found alive in episode 21. He and Moira separate at the end of season one, and he returns in season two to help her run for mayor. It is revealed that Moira had confided in Walter about Thea's true paternity at some point after they marry. He is currently the chief financial officer of Starling National Bank.
- Jamey Sheridan portrays Robert Queen, Moira's late husband, Oliver's father, and Thea's legal father. Despite his marriage to Moira, Robert was not a faithful husband, having many illicit affairs outside of his marriage including with his company's intern, Isabel Rochev. Robert is secretly aware that Thea is Malcolm Merlyn's biological daughter, but accepted her and also acted as a surrogate father to Malcolm's son, Tommy. As a young man, Robert gained his wealth through corrupted means including killing a local councilman, Henry Goodwin; he gradually become remorseful of his greed, leading him to join Malcolm's secret society, Tempest, to improve Starling City's condition in hope of making amends. He and Oliver were both lost at sea when Malcolm sabotaged the Queen's Gambit. Robert sacrifices his life by killing himself, increasing Oliver's chances of survival and returning home to Starling City to right Robert's wrongs.
Introduced in season two
- Cynthia Addai-Robinson portrays Amanda Waller, leader of A.R.G.U.S. and commander of the Suicide Squad. In season two, Waller often forces John Diggle to work for her on missions other A.R.G.U.S. agents are unwilling to perform. She tries to have Starling City destroyed during Slade Wilson's attack to contain the Mirakuru soldiers, only to be stopped by John and Lyla. She has used the codename "Mockingbird". She is killed after the Shadowspire soldiers infiltrate A.R.G.U.S. in season four. In the season three flashbacks, she rescues Oliver from Lian Yu after witnessing his progressive skills in combat, and forces him to work for her and, in the process, furthers his trainings two years prior to his return to Starling City.
- Kevin Alejandro portrays Sebastian Blood / Brother Blood, a savvy politician who is working with Slade Wilson, a friend of Oliver Queen and romantic interest of Laurel Lance. He is a city alderman who is running for mayor to create his vision of Starling City. He leads a double life as a criminal, wearing a skull mask based on the nightmares he had of his late-father, called "Brother Blood". Seemingly benign, over the course of season two Sebastian is gradually revealed to be narcissistic and directly responsible for the murders of his parents. When Oliver and Laurel are close to discovering his secret, he misdirects them by having Laurel kill a decoy in the skull mask. Laurel uncovers his secret and Oliver tries to reason with Sebastian. Sebastian is betrayed by Slade, causing him to give the Mirakuru cure to Oliver, for which he is killed by Isabel Rochev.
- Summer Glau portrays Isabel Rochev, a senior executive at Stellmoor International who acquires half of Queen Consolidated in the second-season premiere. She later secures full control of the company in a hostile takeover. It is revealed she was Oliver's father's mistress during her internship and had been working with Slade to get revenge. Like Oliver, Isabel was also trained by Slade in martial arts, but she was later injected with the same Mirakuru drug that was given to Slade. In the season two finale Isabel is killed by Nyssa al Ghul. The character shares her name with the DC Comics villain "The Queen", who, in the comics, became CEO of Queen Industries following the death of founder Robert Queen.
- Grant Gustin portrays Barry Allen / Flash, a young crime scene investigator from the Central City Police Department. Oliver first meets Barry when the latter arrives to personally investigate a superhuman-related crime in Starling City. Barry discovers that Oliver is his vigilante idol, the Arrow, saves Oliver's life and helps him to begin uncovering the Mirakuru plot orchestrated by Slade Wilson. Ultimately, both Barry and Oliver become good friends and they occasionally offer each other advice and support. Barry later gains the power of super speed, and is inspired by Oliver's example to become a hero known as the "Flash". He occasionally joins Oliver on missions and remains a trusted friend and ally. Gustin stars as the character on The Flash.
- Katrina Law portrays Nyssa al Ghul, the daughter of Raʾs al Ghul. Nyssa is said to have encountered a dying Sara on Lian Yu after Oliver and Slade's fight on the Amazo, and brought Sara to the League where they became lovers, though her father never approved of their relationship. In season two, when Sara leaves the League, Nyssa works to force her return, threatening her family, but ultimately accepts her departure and later helps Oliver fight Slade's army when Sara decides to return to the League. In season three, when Sara is murdered, Nyssa goes on a vengeance quest to kill Malcolm, correctly assuming he is her killer though he claims otherwise. She befriends Sara's sister, Laurel, but her animosity with Oliver intensifies because he is unwilling to let her execute Malcolm. Nyssa feels betrayed when Raʾs declares Oliver his successor and releases Malcolm, and she leaves Nanda Parbat for Starling City and begins training Laurel. Nyssa is later captured by Oliver, Maseo Yamashiro and a team of assassins to bring her back to Nanda Parbat by force, for stealing the Alpha/Omega virus from the League. Instead of having Oliver kill Nyssa for her betrayal, Raʾs decides that the two should marry, to her evident dismay. However, Nyssa aligns herself with Oliver and his team to save Starling City, defying her father. She later returns to the League under Malcolm's leadership and bows to him despite making it clear that she intends to kill him one day. In season four Nyssa begs Laurel not to use the Lazarus Pit to bring Sara back to life, knowing Sara will return different. When Laurel does so regardlessly, Nyssa retaliates by using a potion Raʾs Al Ghul left to destroy the Pit. Nyssa later escapes and tries to manipulate Oliver into killing Malcolm by leveraging him with the cure to Thea's condition, though this results in war between her and Malcolm. Eventually Nyssa succeeds when Oliver defeats Malcolm without killing him and Nyssa disbands the League to spite Malcolm and regain Team Arrow's trust. She later returns to attend Laurel's funeral.
- Caity Lotz portrays Sara Lance / Canary, Laurel's sister with whom Oliver had an affair. Sara, along with Laurel and their mother Dinah, is based on the DC Comics superheroine Black Canary. She was believed to have drowned with the sinking Queen's Gambit, but she resurfaces in season two as another vigilante, the "Canary", who is connected to the League of Assassins. She was originally portrayed by Jacqueline MacInnes Wood in the pilot. According to Kreisberg, she is "the beginning of the Black Canary story". She eventually wins her freedom from the League and returns to Starling City, to become part of Oliver's team in addition to working as a bartender at his nightclub. She breaks with Oliver over a dispute concerning Roy, and rejoins the League in order win their backing against Slade Wilson's army. She returns to Starling City on a mission for the League, but is killed by a mysterious archer. It is revealed that Thea killed Sara while drugged and controlled by Malcolm, as part of a plot to force Oliver into combat with Raʾs al Ghul. Lotz dubs Cassidy's lines when Laurel impersonates Sara as the Canary, and later appears as a hallucination of Laurel's. In season four, Laurel, Thea, and Malcolm resurrect Sara using the Lazarus Pit, but she returns mentally fractured until Oliver brings in his old friend, John Constantine, to help restore her soul. However, Sara's behavior remains volatile and she suffers an insatiable bloodlust, which prompts her to seek solitude away from home.
- Dylan Neal portrays Dr. Anthony Ivo during flashbacks in season two. He is the first character in the series who tells Oliver, Slade and Shado about the "Mirakuru"; he later murders Shado. After one of his hands has been cut off by Slade, he is killed by Oliver on Lian Yu.
- David Nykl portrays Anatoli Knyazev, based on the character KGBeast. Anatoli was kidnapped by Dr. Ivo and is brought to Lian Yu where he meets Oliver Queen and becomes a friend and is instrumental in Slade's defeat on the island. Sometime between the flashbacks and the present, Anatoli makes Oliver a Bratva captain and continues to assist him in the present.
- Danielle Panabaker portrays Caitlin Snow, a bioengineering expert from S.T.A.R. Labs. Caitlin helps Felicity in recreating the Mirakuru antidote, and occasionally helps Team Arrow on missions. Panabaker stars as the character on The Flash.
- Graham Shiels portrays Cyrus Gold, who is the first to survive injection with Mirakuru in the present day. Oliver defeats him in the episode "Three Ghosts".
- Bex Taylor-Klaus portrays Cindy a.k.a. "Sin", a wayward youth who Sara takes under her wing[clarification needed] in Starling City after Cindy's father is killed on Lian Yu. Cindy later befriends Roy Harper and Thea Queen.
- Carlos Valdes portrays Cisco Ramon / Vibe, a mechanical engineering genius at S.T.A.R. Labs with known metahuman abilities to detect anomalies within reality and sonic manipulation. Cisco helps upgrade the arsenals of Oliver, Laurel, and Sara, aids Ray with his Atom suit, and designs a new safe house for Oliver. Valdes stars as the character on The Flash.
Introduced in season three
- Eugene Byrd portrays Andrew "Andy" Diggle, the brother of John Diggle who is first seen as a bodyguard in a season three flashback, but was previously known to have been killed by the H.I.V.E. organization, which hired Floyd Lawton as their hitman. However, Andy led a double life in the military as a drug lord associated with the Shadowspire organization in Afghanistan; H.I.V.E. faked Andy's death and he eventually became one of Damien Darhk's "Ghosts". John suspects that Andy joined H.I.V.E. of his own free will, and tries to reconcile with his brother while saving him from damnation. Andy later helps John and Lyla stop Shadowspire from obtaining a weapon from A.R.G.U.S and is welcomed back into the family by John, but this proved to be a facade to get closer to Team Arrow. Later, he works with Malcolm Merlyn to get Darhk out of prison, and restore Darhk's powers. Andy's actions result in Laurel's death at Darhk's hands. As a result, John pursues and kills Andy to protect the rest of his family.
- Rila Fukushima portrays Tatsu Yamashiro / Katana, based on the DC Comics character of the same name. She is a mentor to Oliver during his time in Hong Kong. Devon Aoki was originally cast in the role but left due to a scheduling conflict.[relevant? ] She is the wife of Maseo Yamashiro. In the present day, her relationship with her husband is estranged after the death of their son and she joins the Crescent Order after returning to Japan. She nurses Oliver back to health after he is nearly killed by Raʾs al Ghul. Tatsu supports Team Arrow during their war with the League of Assassins. After a short sword-fight with her husband, she kills Maseo and mourns him. She later helps Nyssa and Oliver in curing Thea from the effects of the Lazarus Pit.
- Vinnie Jones portrays Danny "Brick" Brickwell, a gang leader in Starling City. He earns the nickname "Brick" from being shot multiple times, without ever being put down. Brick organizes the takeover of the Glades in Oliver's absence and is later revealed to have killed Malcolm's wife, Rebecca, and thus is the indirect catalyst for the events of the series. Damien Darhk extorts Brick into joining H.I.V.E. after they escape from prison.
- Matt Nable portrays Raʾs al Ghul (Arabic: رأس الغول; "The Demon's Head"), the main antagonist of the third season and leader of the League of Assassins who has lived for at least two centuries (having been born some decades before 1854) due to the use of the Lazarus Pit, a pool which can heal wounds and bring the dead back to life. He is the father of Nyssa al Ghul. Raʾs has never acknowledged Sara as a member of the League and disapproves of Nyssa's relationship with her. Oliver claims to have killed Sara and challenges Raʾs to a trial by combat which Raʾs easily wins, nearly killing Oliver by stabbing him through the chest. Raʾs wants to make Oliver his heir—the new Raʾs al Ghul—because Oliver is the only man to survive a death match against him, fulfilling a League prophecy regarding his destined successor. Raʾs become fixated with Oliver, neglecting other candidates, and becomes estranged with his daughter. When Oliver refuses his offer, Raʾs orders the League to kill the people of Starling City; he stabs Thea and leaves her near death, with a cure via the Lazarus Pit available only if Oliver agrees to become his heir. Oliver accedes, and Raʾs names him "Al Sah-Him". After Oliver captures Nyssa, Raʾs forces an engagement between them. He also orders Oliver to unleash the Alpha/Omega bioweapon on Starling City, oblivious that Oliver was working with Malcolm and Nyssa to take down the League from the inside. In the season finale, Oliver kills Raʾs. Malcolm becomes Raʾs successor of the League's leadership, and thus its prophecy is fulfilled as Malcolm survived an assault by Raʾs during his captivity.
- J.R. Ramirez portrays Ted Grant / Wildcat, based on the DC Comics character of the same name. Grant is a former boxer who runs a gym for underprivileged youth. He provides Laurel with combat training, and in the process becomes Laurel's friend and confidant. He is also a former low-profile vigilante who watched over the Glades.
- Charlotte Ross portrays Donna Smoak, Felicity's mother, and a former cocktail waitress from Las Vegas. Donna was previously married to cyber-criminal Noah Kuttler which led to Felicity's conception prior to leaving him; Donna claimed that Noah abandoned them, resulting in an estranged relationship with Felicity until they reconcile seventeen years later. Donna meets and dates Quentin Lance, but remains bitter over Noah and his criminal past. She helps Quentin to cope with the loss of his eldest daughter, Laurel. As of the season five premiere, Donna and Quentin have split up.
- Brandon Routh portrays Ray Palmer / Atom, based on the DC Comics character of the same name. Ray is a scientist, inventor, minister and businessman who succeeds Isabel Rochev as CEO of Queen Consolidated after her crimes are posthumously exposed. Ray seeks to make improvements to Starling City after it survived terrorist attacks, and has the intention of renaming it "Star City", involving himself with the city's legislative body. After his fiancée, Anna Loring, is killed by one of Slade Wilson's Mirakuru soldiers, Ray uses the company's research and technical inventions to develop a suit powered by white dwarf matter, which, in his theory, can alter the wearer's size down to the subatomic level. Ray seeks to use it to become a high-tech vigilante, named "Atom". He renames Queen Consolidated "Palmer Technologies" and makes Felicity his Vice President. Ray and Felicity become lovers until Ray realizes that she is in love with Oliver. Ray assists Team Arrow's fight against Raʾs al Ghul to stop him unleashing the Alpha/Omega bioweapon. In the season finale Ray is working on the suit with the intention of giving it the power to shrink but a malfunction causes the entire top floor of Palmer Technologies to blow up. It is revealed later that Ray is alive but was being held captive by Darhk until he is freed by Team Arrow to join their fight against H.I.V.E.
- Karl Yune portrays Maseo Yamashiro, based on the DC Comics character of the same name. He was Oliver's handler, and later good friend, during his time in Hong Kong. He becomes estranged from his wife, Tatsu Yamashiro, after the death of their son, Akio, and joins the League of Assassins as "Sarab". However he remains loyal to Oliver and covertly ensures his survival after his duel with Raʾs al Ghul, and still loves Tatsu. Despite this he is loyal to Raʾs and becomes a key leader in the League's mission to force Oliver to take Raʾs place, going as far as to kill the Starling City mayor to frame him. He is eventually killed by Tatsu after a sword-fight.
Introduced in season four
- Tom Amandes portrays Noah Kuttler / Calculator, based on the DC Comics character of the same name. Kuttler is Felicity's long-lost father, who is a career cyber-criminal whom Donna Smoak divorced from eighteen years previously. He has advanced computer science and hacking skills which surpasses his daughter's, which he uses to blackmail Roy Harper out of hiding. Kuttler is ultimately arrested by Donna's current romantic partner, Quentin Lance, after Felicity turns her father in. After escaping from prison, Kuttler finds himself being targeted by H.I.V.E. due to their awareness that he possibly can thwart their plans for world domination with his computer skills; he helps his daughter in stopping H.I.V.E. after Felicity and her friends save him, but leaves Star City once more at Donna's insistence.
- Jimmy Akingbola portrays Baron Reiter, based on the DC Comics character Baron Blitzkrieg. He is the leader of Shadowspire in the series flashbacks, when he was searching for magical artifacts on Lian Yu, specifically the idol that Damien Darhk later possesses. He is eventually killed by Oliver when Taiana gains control of the idol's powers and weaken him long enough for Oliver to hurl a knife into Reiter's back, killing him.
- Janet Kidder portrays Ruvé Adams, the wife of Damien Darhk, who shares his ambitions and campaigns against Oliver for mayor of Star City. She wins the election and becomes mayor after Oliver drops out of the race. She is held captive by Lonnie Machin, who stabs her in the chest with an arrow. Unable to move, she is crushed by falling debris from the destruction of Darhk's nuclear bomb shelter. Before she dies, she asks Oliver to save her daughter.
- Neal McDonough portrays Damien Darhk, a former member of the League of Assassins and a friend-turned-adversary to Raʾs al Ghul. He is the main antagonist of the fourth season. Years ago, Darhk left the League after being denied its leadership, taking a sample of the Lazarus Pit and several League members with him after Raʾs failed orders to execute him. He leads his own clandestine group, H.I.V.E., and plots to start a nuclear holocaust in order to rule a post-apocalyptic world in a plan known as "Genesis". According to Raʾs, Darhk also orchestrated Bronze Tiger's plot to steal Malcolm's prototype earthquake machine and Mark Shaw's attempt to acquire the A.R.G.U.S. file. In season four, he is introduced as the main antagonist, a formidable hand-to-hand combatant with mystical abilities—he can remotely manipulate objects and people, and can drain the life force from a person through physical contact. Darhk becomes enemies of Green Arrow and Oliver, believing the two are working together and not the same man (although he does express suspicions). Darhk also kidnapped Ray Palmer to steal his technology for Genesis. He ultimately deduces the true identities of the entire Arrow team. Despite being a sadistic terrorist leader, Darhk is also a loving father and husband; his wife, Ruvé Adams, also shares her spouse's cruelty and is supportive of his endeavors. Through Malcolm, Darhk learns that Oliver has fathered a son and uses him as a means to scuttle Oliver's mayoral campaign. Quentin and Mari McCabe discover that a mystical idol in Darhk's possession is the source of his supernatural powers, and Mari destroys it, leaving Darhk powerless and imprisoned. He later escapes with the assistance of Malcolm and Andy, regaining his powers from his rebuilt idol in the process, and kills Quentin's daughter, Laurel, in retaliation for his imprisonment. Following the destruction of Genesis and his wife's death, Darhk attempts to destroy all of Star City, but the idol is destroyed once more, nullifying his powers. Darhk fights Oliver but is overpowered, and taunts Oliver stating he spared Slade Wilson when he killed his mother. Oliver reminds Darhk of his crimes and kills him.
- Jack Moore portrays William Clayton, Oliver's son. William learns of his relation to Oliver and discovers his father's secrets at the end of season five.
- Ryan Robbins portrays Conklin, a member of Shadowspire in the series flashbacks. Conklin is highly suspicious of Oliver and his presence on Lian Yu, and regularly tries to convince his boss, Reiter, not to trust Oliver. He is later killed by Oliver when the two are left alone in a room and fight in hand-to-hand combat. In "Taken", a primordial energy takes the form of Conklin and stands at the entrance of the cave, speaking in tongues, but disappears when it notices the spell tattoo on Oliver's chest and deemed him worthy to pass.
- Elysia Rotaru portrays Taiana Venediktov, a woman whose life Oliver saves in the flashbacks, faking her death to protect her from Shadowspire. Oliver kills her brother, who Conklin had sent to attack him, and initially tries to hide it from Taiana. After they get caught by Conklin, Oliver is tortured, and they are both imprisoned. While Taiana is taking care of his wounds—and after Shado appears in his dreams, telling Oliver to do the right thing—he confesses. She later helps Oliver escape as they manage to steal the idol from Reiter, but the idol's power begins to corrupt Taiana. Realizing she cannot control it, she asks Oliver to kill her, and he does.
- Parker Young portrays Alex Davis, an employee of Oliver's mayoral campaign and love interest for Thea. When Oliver drops out of the mayoral race, he starts to work for Ruvé Adams and it is later revealed that he is being controlled by her. Alex is killed by Lonnie Machin when he stumbles into a fight between Thea and Lonnie, due to Lonnie believing that Alex is clouding Thea's mind.
- Alexander Calvert portrays Lonnie Machin / Anarky, based on the DC Comics character of the same name. Lonnie is a deranged freelancing criminal who is willing to do whatever it takes to impress a potential employer. After his face was disfigured and burned by Thea, he becomes a rogue terrorist and plans on getting his revenge on Darhk for betraying him.
- Madison McLaughlin portrays Evelyn Crawford Sharp / Artemis, based on the DC Comics character Starling. She takes up the mantle of the Black Canary following Laurel's death, eventually settling on the name Artemis. She becomes one of the new recruits of Team Arrow despite her moral ambiguity, but ultimately betrays the team to Prometheus after learning about the List.
- Chenier Hundal portrays Paul Holt, the husband of Curtis Holt and Felicity Smoak's physiotherapist.
Introduced in season five
- Chad Coleman portrays Tobias "Charon" Church, an imposing gangster looking to unite the various criminal enterprises in Star City under his own singular command. Church sought to eliminate Green Arrow to proceed with his plan to use Star City's docks to ship drugs and weapons between the other city's major crime families[clarification needed] with ease, having frequent encounters with him. After capturing and torturing the Green Arrow's sidekick, Rene Ramirez / Wild Dog, Church learns his identity is Oliver Queen, but is defeated by him. While being transferred to Iron Heights prison, Church is murdered by Prometheus for ignoring his warnings to not target Green Arrow.
- Tyler Ritter portrays Detective Billy Malone, a new member of the Star City Police Department and Felicity's new boyfriend. He is inadvertently killed by Oliver due to a trap set by Prometheus.
- Joe Dinicol portrays Rory Regan / Ragman, based on the DC Comics character of the same name. Regan arrives "fresh from a personal tragedy" hoping to find answers in Star City, where he ultimately crosses paths with Green Arrow.
- Carly Pope portrays Susan Williams, based on the DC Comics character of the same name. Susan is a reporter from Coast City for Channel 52 news, who becomes interested in Oliver and the Green Arrow. She later becomes his love interest.
- David Meunier portrays Ishmael Gregor, based on the DC Comics character of the same name. Gregor is the Pakhan ("Godfather") of the Bratva (Russian mafia), who takes a special interest in Oliver Queen.
- Dolph Lundgren portrays Konstantin Kovar, a member of the Russian government who appears in the season's flashbacks. Oliver seeks to kill him to fulfill Taiana's last request. A character of the same name appears in DC Comics as the father of the superhero Red Star.
- Mick Wingert voices Vigilante, based on the DC Comics character of the same name. Despite belief that Josh Segarra voiced the character, thus implying that Segarra's character Adrian Chase was also Vigilante, it was revealed that Chase was instead Prometheus. As such, Guggenheim indicated that the reveal of who Vigilante actually was would "probably" not be seen in season five and that Vigilante's identity was someone already seen before.
- Lexa Doig portrays Talia al Ghul, based on the DC Comics character of the same name, a worldly and cultured elite warrior. Milli Wilkinson previously portrayed a younger version of the character on Legends of Tomorrow. Talia is Raʾs al Ghul's daughter and Nyssa al Ghul's eldest sister; she trained one of Oliver's mentors, Yao Fei Gulong, before training Oliver herself in Russia. She seeks revenge against Oliver for her father's death by aligning herself with Adrian Chase. Talia is also enemies with Nyssa after the former left their family, and their feud is intensified after knowing Nyssa's role of their father's death. Talia also controls a League of Assassins remnant.
- Kacey Rohl portrays Alena, a member of the Helix hacking organization who attempts to recruit Felicity to their ranks after helping her clear Diggle's name.
Introduced in season six
- Michael Emerson
- Sydelle Noel as Samanda Watson, an FBI agent
- Kirk Acevedo as Ricardo Diaz
The following is a supplementary list of guest stars, some recurring, who appear in lesser roles. The characters are listed, in alphabetical order by actor, by the season in which they first appeared.
Introduced in season one
Introduced in season two
Introduced in season three
Introduced in season four
Introduced in season five
- Garry Chalk portrays J.G. Walker, a corrupt US Army general who frames Diggle to conceal his own illegal arms dealing, which is ultimately exposed.
- Cody Runnels portrays Derek Sampson, a drug dealer terrorizing Star City.
- Wil Traval portrays Christopher Chance / Human Target, based on the DC Comics character of the same name, who is hired by Oliver to serve as his body double when he is mayor.
- Nick Zano portrays Nate Heywood / Steel, a historian-turned-metahuman superhero who can transform himself into a steel-like form. Zano stars as the character on Legends of Tomorrow.
- Melissa Benoist portrays Kara Danvers / Supergirl, reprising her role from the series Supergirl. Supergirl is Barry Allen's friend and ally from another universe, whom Oliver also ultimately befriends during an alien invasion crisis.
- Amy Pemberton voices Gideon, the on-board navigational assistant of the Waverider. Pemberton stars as the character on Legends of Tomorrow.
- List of The Flash characters
- List of Legends of Tomorrow characters
- List of Supergirl characters
- List of Arrowverse actors
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