Promotional art for Shadowpact #4.
Art by Steve Scott.
|First appearance||Fury of Firestorm #24 (June 1984)|
|Created by||Dan Mishkin (writer)
Gary Cohn (writer)
Paris Cullins (artist)
|Alter ego||Daniel Patrick Cassidy|
Sentinels of Magic
Justice Society of America
|Abilities||Superhuman strength, durability, vision, and hearing
Can find demons on Earth and banish them to Hell
Highly trained martial artist and acrobat
Blue Devil is a fictional character, a superhero featured in material published by DC Comics. He first appeared in a special insert published in Fury of Firestorm #24 (June 1984). That story led directly into Blue Devil #1, also cover dated June 1984. He was created by Dan Mishkin, Gary Cohn, and Paris Cullins.
Fictional character biography 
Daniel Patrick Cassidy is a special effects wizard and stuntman hired to create and play the title character in the movie Blue Devil. To that end Cassidy creates a full-body costume with a hidden powered exoskeleton and built-in special-effects devices. When two of his co-stars accidentally free a demon named Nebiros, Cassidy uses his costume to drive the demon back, but not before being blasted with mystical energy. After the fight, Cassidy finds that the blast has permanently grafted the Blue Devil costume to his body.
Cassidy quickly finds himself embroiled in repeated adventures and conflicts with supervillains, as his newfound status has turned him into a "weirdness magnet." Never stopping to seek a way to remove his costume, Cassidy starts to enjoy his new lifestyle, and becomes more and more comfortable as a superhero, even accepting a place in the Justice League of America. He gains a sidekick of some sort, when Eddie Bloomberg, his former gofer and devoted fan, designs a suit similar to his own to adventure as the Kid Devil. Eventually, he moves into "The House of Weirdness" with Cain the Caretaker as his superintendent.
The first Blue Devil series was intentionally written as a humorous and light-hearted comic book story, but this light-hearted style was discarded with later appearances of the character.
Blue Demon and later alliances 
Seeking more fame and thrills, Blue Devil is approached by the demon Neron. Neron is known for offering Faustian bargains to heroes and villains alike. Neron offers Cassidy fame as an actor, requiring an act of destruction as payment. Neron sends Cassidy to destroy an unmanned electrical substation in the desert. Believing it to be a relatively harmless act, Blue Devil complies, however he unwittingly causes the death of Eddie's Aunt Marlene, Cassidy's best friend. The story of his personal loss is enough to attract several movie offers.
Opposing Neron, Cassidy is able to partly foil the demon's short-term plans, but he dies in the process. Cassidy's death is short-lived, as he is restored to life as a real devil, no longer a man in an organic suit. Ironically, Cassidy had been a devout Catholic, but now the Blue Devil is despised by the Catholic Church and even unable to set foot on consecrated ground without self-immolating.
Blue Devil joins the Justice League again, until his second death at the hands of Mist, who showered him with holy water. Blue Devil's bones are retrieved by Sebastian Faust, who much later restores him again to life, seeking help to restart the fires of Hell during the Day of Judgment storyline. Blue Devil now has the chance to confront Nebiros, empowered by a magic trident seemingly given by the King of Lies himself; Blue Devil stalls Nebiros, stripping him of his trident and allowing Firestorm to deal the killing blow, while back on Earth the other heroes of the Sentinels of Magic save the world.
Blue Devil then joins the Sentinels of Magic and partners with Faust, but it is an uneasy partnership. As an apparent act of kindness, Faust restores Blue Devil's freedom by restoring to him his last missing bone. Blue Devil sacrifices his life against Hermes Trismegistus, but as a true devil he is restored to life again, tasked to roam the Earth with Lucifer's Trident banishing escaped demons back to Hell.
One Year Later 
One Year Later Blue Devil is employed as a bouncer at the Oblivion Bar, an interdimensional place for magical beings, and there he is recruited by Ragman, Enchantress, and the Detective Chimp to fight against Spectre in Day of Vengeance. With his enhanced demonic strength, he's the heavy hitter of the Shadowpact, the assemblage of magical heroes devoted to fight for every "lost cause." This grouping is even able to wound the powerful Eclipso. Feeling necessary for the first time in a long time, he devotes himself to the team. One of the goals they take on is to help look over the wild magic of the "Tenth Age"; a direct result of the events of Day of Vengeance.
He spends the "missing year" trapped in Riverrock, Wyoming along with the rest of Shadowpact. It is a small city hidden by a blood shield by an assembly of evil magical beings, called the Pentacle. There he meets, or rather meets again, Jack of Fire, a red, muscular demon. The entity is hiding a disfigured, bony face under a black bandanna, claiming to have been turned into a demon by the actions of Daniel. He further explains that the very same moment the demonic Neron granted fame and powers to Cassidy as the Blue Devil, the dead parents and siblings of Patrick were dragged from Heaven to Hell.
From then on, Blue Devil's life starts going downhill: even if in his personal time line passed only a few days, the Enchantress was forced to steal a year of life out of every Shadowpact member (and surviving Riverrock towns person) to shatter the bloody barrier. As such, the entire world had long thought Shadowpact lost, even building a memorial statue. Having been considered dead for a year, Blue Devil struggles to rebuild his life.
Blue Devil is forced to confront Kid Devil, now granted metahuman powers by Neron himself. When questioned about his involvement in Marlene's death, Blue Devil is forced to admit that his actions were what caused her death. Due to the terms of his deal with Neron, that he would become Neron's eternal servant on his 20th birthday should he lose his trust in Blue Devil, Kid Devil realizes that he is now damned, having lost all trust in Blue Devil following his confession. Kid Devil, enraged, yells at Blue Devil to stay away from him and runs off, leaving a guiltridden Blue Devil behind.
To add further misery to his condition, Blue Devil is demoted to the rank of "rhyming demon." His new position results in the heroic Earth-based angel Zauriel being sent to confront him. His demotion is explained as the paradoxical condition of his being both a hero and a demon: being famous and loved by everyone, he makes Hell a glamorous place, spurring weak minds to attain his glamor by selling their souls to hell. Zauriel, on behalf of his good faith, takes Blue Devil's place in the Shadowpact, giving him enough time get out of his infernal deal.
Blue Devil puts his case in the hands of an eager lawyer, more than happy to be able to confront Hell itself in a hall of justice. Blue Devil undertakes the task of completing 13 labors, as Hercules before him, on behalf of the Catholic Church as a show of good will.
Returning to Hell for the final hearing, he discovers that Jack of Fire was the one selling his sibling's soul first, with Blue Devil merely following unwillingly. His lawyer repeatedly proves that Jack is the only one who can return Cassidy's soul, and the souls of his family, back, since he was the one who sold them in the first place. Blue Devil uses his new lower status as a rhyming demon to force Jack to do so, but in the process he loses both Lucifer's Trident and his demon form, reverting back to a mortal.
Jack of Fire is now allied with a seemingly all-powerful Sun God, but plots to betray him in retaliation for his harsh treatment and to lead an army of demons on Earth. Cassidy feels forced to don a new suit of armor, very similar to the one he wore during his Hollywood years, but even more powerful. He sets off to fight his brother, who refuses. Instead, after a brief confrontation, acknowledging that the Sun God will eventually kill him for his betrayal, he commits suicide in front of Cassidy, naming him inheritor of all his powers and demonic status - but without forfeiting his soul. Cassidy rejoins the Shadowpact to defeat the Sun God, and Zauriel ends his temporary membership with the group.
During the Reign in Hell storyline, Cassidy convinces Zatanna and Sargon the Sorcerer to take him to Hell and accompany him as to make a deal with Lord Satanus against Neron; when, after much suffering, they reach Satanus, he pleads to be incorporated into Satanus' attack force in hopes of receiving the gift of full humanity from the demon in case of his victory. Inadvertently, he brags about being capable of handling Etrigan, who is causing damage to Satanus' forces; Satanus takes heed of this and teleports him to do battle with Etrigan. Upon losing, the demon steals the remains of his humanity.
Later, due to the effects of the magical drug Satanus has released all over Hell, he is transformed into a human, but soulless. Etrigan, now transformed into a replica of Jason Blood, offers him his soul back, warning him the drug only worked on pureblood demons such as the type he had been transformed into when Etrigan stole his soul, meaning accepting it back meant returning to his demon shape forever. He is later traumatized by Sargon's sacrifice to let almost all heroes intervening in the War of Hell escape to Nanda Parbat, and is later the only one convinced of reuniting the Shadowpact by Detective Chimp.
His most recent appearance was with Zatanna and the Phantom Stranger at the desecrated grave of Batman in Blackest Night. In typical fashion, he cracks that the Stranger brought them there to "hold hands and sing Kumbaya." That changes when black rings take control of Crispus Allen. While Zatanna was sent to gather the Justice League, Blue Devil and the Stranger attempt to stop the Black Lantern Spectre, failing miserably. He and the Stranger head to Nanda Parbat, where the Stranger helps Deadman remove the black ring from his body. Blue Devil is then tasked by the Stranger to protect the body, being told that it is of "singular importance."
Powers and abilities 
Even before he became Blue Devil, Dan Cassidy was a highly trained martial artist and acrobat. His costume included Kevlar body armor, visual and auditory amplifiers, radio gear, mini-gills allowing underwater breathing, and servo-motors which increased his strength at least twentyfold. After being grafted to Cassidy's body the costume became organic and gained the ability to self-repair at an extremely fast rate (effectively a healing factor). Cassidy's abilities seem to have been changed little by his transformation into an actual demon.
In his current incarnation, Blue Devil still possesses some degree of superhuman strength, capable of going toe-to-toe with beings like Eclipso, and knocking out a power-drunk Enchantress in one punch. He is also remarkably resistant to physical damage, evidenced when Eclipso threw him a distance of approximately 500 feet upwards, he did not even require time to recover before getting up and heading back into the fight.
Originally, Blue Devil wielded a trident of his own design which included, among other things, rocket engines capable of carrying two people at high speeds. He now carries the Trident of Lucifer, which allows him to find demons on Earth and banish them to Hell. During a battle with Eclipso and the Spectre the trident was thrown into the ocean; it was recovered shortly after by Aquaman who returned it to Cassidy, and much later given to Jack of Fire.
Briefly resuming his human body with a more powerful exosuit, Cassidy is given back his trident and demonic powers by Jack of Fire, but as a "demon with a soul".
Other versions 
Kingdom Come 
Tangent Comics 
In the 1997 Tangent Comics One Shot Sea Devils Blue Devil lends his name to the brand of beer served at The Black Pirate pub in New Atlantis. There is also a patron of the pub seen wearing a Blue Devil T-shirt.
In other media 
- Blue Devil appeared in a few episodes of Justice League Unlimited. He mostly serves as a background character with non-speaking cameo appearances. He only spoke in the series finale episode "Destroyer", where he had one line to yell for everyone to go to the Javelins. Blue Devil was voiced by Lex Lang.
- Blue Devil makes a non-speaking cameo appearance in the Young Justice episode "Revelation". He is shown helping the Flash and Captain Atom prevent a nuclear meltdown caused by gigantic moving plants. In "Agendas," Blue Devil is considered for membership in the Justice League. The suggestion ends up being passed over. In the second season's finale, "Endgame", he is seen with the Justice League plotting to sabotage Reach technology set to destroy the world.
- Blue Devil was the sixth figure released in the thirteenth wave of the DC Universe Classics line. He appears in his regular costume and his accessory is his trident.
- In the comic book adaptation of Justice League Unlimited, Blue Devil is the featured character of issue number 25.
- Manning, Matthew K.; Dolan, Hannah, ed. (2010). "1980s". DC Comics Year By Year A Visual Chronicle. Dorling Kindersley. p. 208. ISBN 978-0-7566-6742-9. "[A] sixteen-page preview story marked the debut of fledgling stuntman-turned-hero Blue Devil. An attempt to put the fun back into comics, writers Gary Cohn and Dan Mishkin and penciller Paris Cullins had Blue Devil face the machinations of Flash villain the Trickster in this lead-in to his own ongoing series."
- Greenberger, Robert (2008), "Blue Devil", in Dougall, Alastair, The DC Comics Encyclopedia, London: Dorling Kindersley, p. 56, ISBN 0-7566-4119-5
- Blue Devil #1 (June 1984)
- Blue Devil #20 (January 1986)
- Starman (vol. 2) #38 (January 1998)
- Shadowpact #13 (March 2007)
- Shadowpact #23 (May 2008)
- Blackest Night #2 (October 2009)
- Phantom Stranger (vol. 2) #42 (March 2010)