Topher Grace as Eric Forman: The protagonist; Eric is a nice guy, generally geeky, physically slight, and somewhat clumsy. He is a smart-aleck with a fast wit and a deadpan sense of humor. He convinces his parents to let his best friend Steven Hyde move in with them, making Hyde like a brother. His father, Red, is always hard on him. Eric is in a relationship with his longtime love and neighbor Donna Pinciotti. He decides to become a teacher after high school, and he leaves the series at the end of the seventh season to teach in Africa.
Mila Kunis as Jackie Burkhart: The youngest member of the group, Jackie starts the series as the pretty, rich, spoiled, selfish, conceited, and annoying immature girl. She likes to give thoughtless and superficial advice, which occasionally turns out to be correct. As the series progresses, she moves away from her self-centered ways and becomes sweeter. Partly as a result of these changes, she and Donna become better friends. By the end of the series, Jackie has dated three of the four males of the group: Kelso, Hyde, and Fez.
Ashton Kutcher as Michael Kelso: The dim-witted pretty boy of the group who wants to coast through life on his good looks. He spends the first half of the series in a relationship with the equally vapid Jackie but their relationship comes to an end when Laurie (Eric's older sister) reveals their affair. His best friend is Fez. He fathers a baby girl named Betsy during the seventh season. He becomes a police officer but gets kicked off the force because he does just about everything wrong. He gets a job as a security guard at a Playboy Club in Chicago, and leaves the series during the eighth and final season. He only appears in five episodes during season eight, including the series finale.
Danny Masterson as Steven Hyde: Eric's best friend and the anti-establishment member of the group. By the end of season one, the Formans allow Hyde to move in after he was abandoned by his mother, making him a foster brother to Eric. Hyde has a witty, blunt, and sarcastic sense of humor, and a rebellious personality. He is also smart, and the other group members often ask for his advice. Although Hyde dates Jackie for three seasons, in the final season he marries an exotic dancer named Samantha. Hyde later discovers Samantha was still married when she married him. As Donna points out in "My Fairy King", that means Hyde and Samantha are not legally married. In the seventh season, Hyde meets his biological father (William Barnett, played by Tim Reid), a wealthy black businessman (making Hyde, who was presumed white, biracial). Barnett, who owns a chain of record stores, makes Hyde first the manager, and later the owner, of the Point Place store.
Laura Prepon as Donna Pinciotti: Eric's longtime girlfriend (and briefly fiancée). Donna is intelligent, good-looking, and a feminist. Although she doesn't agree with what Jackie represents in the beginning of the series, they become friends. Donna is in a relationship with Eric for seven seasons (despite their break-up during season 4). She has brief romances with Casey, Michael's brother, and with Randy during the final season and quickly ends it. She rekindles her relationship with Eric at the end of the show's finale.
Wilmer Valderrama as Fez: The foreign exchange student of the group whose hormones seem to be out of control. His secret country of origin is one of the longest-running gags on the show. He is sweet, friendly, perverted, gullible, and rather odd. He enjoys eating candy, drinking beer, and looking at pornography. His best friend is Kelso, and he shares a "younger brother" type relationship with Hyde and Eric. He constantly flirts with Jackie and Donna and often makes romantic advances toward them. Initially, he has a lot of trouble getting attention from girls, but during the eighth season he becomes a ladies' man. He is in love with Jackie throughout the series, but his love is not reciprocated until the eighth season when they become a couple.
Debra Jo Rupp as Kitty Forman: Eric's mother and Red's wife, Kitty is a cheerful, doting mother, but can also be assertive when pushed. She is a nurse, and a former smoker. Her major mood swings are usually attributed to menopause. She is also a good mother figure to Eric's friends.
Kurtwood Smith as Red Forman: Kitty's husband, Eric's and Laurie's father, and Hyde's adoptive father. Red is a Navy combat veteran, having served in World War II and the Korean War. Despite his mean exterior, Red occasionally displays a soft side. His hobbies include working with his power tools, drinking beer, watching television, reading the newspaper, hunting, and fishing.
Tanya Roberts as Midge Pinciotti: Bob's wife, Donna's mother, and Kitty's best friend. Midge was the sexy neighborhood mom Eric and his male friends fantasized about when coming of age. Although often dim-witted, she is also a kind-hearted woman who develops feminist ideals. She and Bob divorce when she is written out of the series after the third season, however, returns during the sixth and seventh seasons in a recurring role where she and Bob almost reunite.
Don Stark as Bob Pinciotti: Midge's husband, Donna's father. Bob often brags about his service in the National Guard, which invariably irritates Red. Bob is also known for walking around his house with his robe wide open and no underwear. He eats constantly, even in bed. Bob is almost always in a good mood and is a ladies' man. His best friend is Red, even though Red sees him as a nuisance. He usually takes the brunt of Red's abuse in a jolly manner.
Lisa Robin Kelly as Laurie Forman: Eric's beautiful but evil older sister. Laurie enjoys tormenting Eric and manipulating her parents. She is promiscuous, often seen with various men, mainly Eric's friend Kelso, who cheats on his girlfriend, Jackie. Eric, Hyde, and Donna often mock her promiscuity. She also has a strained relationship with her mother, who thinks of her as a freeloader. She leaves the series during the third season but returns in a recurring role during the fifth. In season five, she and Fez marry to prevent him from getting deported. In season six, she is portrayed by a different actress, Christina Moore.
Tommy Chong as Leo Chingkwake: A hippie, and the owner of a Foto Hut at which Hyde once worked. Leo is an Army veteran who served in World War II, where he was awarded a Purple Heart. Leo often puts play before work and maintains an easy-going attitude in most things, business included. He disappears from the series after season four but is later referenced in season five's "The Battle of Evermore" when the gang goes on a mission to find him, but with no luck. He returns in season seven and remains on the series until the show's end. In season 8, he gets a new job working for Hyde at Grooves.
Josh Meyers as Randy Pearson: The newest member of the group, who is introduced in the final season. Randy appears laid back, gentle, polite, and a ladies' man, although later many of his flaws surface. He forms a friendship with Red after showing Red how good he is at fixing things. While Hyde, Jackie, Donna, and Kelso accept him as a new member of their group, Fez does not. Randy dates Donna for the majority of season eight, but she eventually breaks up with him.
Angie Barnett (played by Megalyn Echikunwoke) is Steven Hyde's half-sister. Hyde did not know he had a sister until the 7th season. Angie graduated from college as a mathematics major. Angie and Hyde worked together managing their father's record store, but Angie did not always like working with him. She dated Kelso, which sometimes annoyed Hyde. Angie got her name because, in the seventh season, all episodes were named after Rolling Stones songs, and "Angie" was a song by the Stones.
Annette Berkardt (played by Jessica Simpson) was Michael Kelso's girlfriend for a brief period of time in season 5. She acts and talks very similar to Jackie, constantly bossing Kelso around. Eric and Donna once referred to her as a blonde version of Jackie, or "Blackie." Despite this, Jackie and Annette hated each other. Once at The Hub, Jackie said to Annette "I didn't know they let 'slutballs' in here". Annette said since she saw Jackie in there she thought it was okay. Later in the episode, when Annette and Kelso were kissing, Jackie yelled "Get off my boyfriend!" to Annette, even though it was months after Kelso and Jackie broke up. This led to Hyde wanting to break up with Jackie.
Beatrice Dorothy "Bea" Sigurdson (née Heprage) (played by Betty White) is Kitty Forman's mother. Bea looks like a friendly old lady, but is actually loud and rude, even to her own family. She appeared in a few episodes in season five. She is often seen yelling and nagging at Burt or saying something rude to Kitty in a friendly manner. She was widowed in "Your Time is Gonna Come" when Burt collapses in the driveway and is rushed to the hospital where he dies. She stays with the Formans for a while after Burt's death then vanishes suddenly.
Bernice Rose Forman (née Larson) (September 16, 1904-January 22, 1977) (played by Marion Ross) is Red Forman's mother. She appeared in the episodes "Sunday, Bloody Sunday", "The Best Christmas Ever" and "Grandma's Dead" of season 1, and flashback in the episode "Halloween" of season two. In the episode Grandma's Dead she dies in Eric's car when he is driving her home.
Brooke Leslie Rockwell (played by Shannon Elizabeth) was the valedictorian of the high school class two years before Eric's class. The summer after Kelso's graduation, she had sex with him and got pregnant. Initially, Brooke did not trust Kelso and didn't want him in the child's life. Eventually, Kelso convinced her to give him another chance. Brooke gave birth to Betsy in 1979.
Steven James "Bud" Hyde, Jr. (played by Robert Hays) is Steven Hyde's stepfather. Bud Hyde worked as a bartender and is an alcoholic. Until the end of the 6th season, Steven Hyde thought Bud was his biological father. Bud Hyde abandoned Steven when he was a child and Steven was always angry at Bud for this. They temporarily reconciled in season 3, with Hyde even moving in with him. However, he would leave again at the beginning of season 4 after getting back together with Edna – forcing Hyde to move back to the Forman house. Hyde mentioned that Bud did attempt to get in touch with him again. (Bud was passed out drunk on Hyde's car.)
Bertrum Wayne "Burt" Sigurdson (October 4, 1901- February 6, 1978) (played by Tom Poston) is Kitty Forman's father. He is often seen avoiding his wife, Bea. In one episode, he bought an ostrich farm, which was right next to a coyote farm. The coyotes ate all the ostriches and the Sigurdsons had to sell the house. Burt died in the episode Your Time is Gonna Come.
Caroline "Crazy Caroline" Dupree (played by Allison Munn) was Fez's girlfriend in season 3. Fez quickly learned Caroline is very jealous and paranoid. She made threats against Donna and Jackie because Caroline felt they were going to steal Fez from her, when in fact Jackie and Donna had no intention of doing so. Caroline was once found hiding in the men's bathroom looking for Fez. Fez did not want to be with someone that aggressive and paranoid so he broke up with her. Fez and Caroline were together one last time in the eighth season. She got extremely angry when she found out that Fez had lied to her about Jackie being his roommate, and when she found nude photos of Donna in Fez's Barry White album (Leo hid the nude photos in the album without Fez's knowledge, but Caroline believed they were put there by Fez). Caroline appeared again in "Sheer Heart Attack". Fez was having sex with women once and not seeing them again and then decided that he wanted to be with only one woman, so he called Caroline. Later in the episode, Jackie told Fez that she loved him and then kissed him as Caroline walked in. This, as always, made Caroline angry with Fez and attack him viciously.
Casey Kelso (played by Luke Wilson) is Michael Kelso's brother who was in the military. Towards the end of season 4 he was dating Donna Pinciotti. During their relationship, there were instances of them engaging in bad behavior, such as Donna drinking and skipping school to hang out with Casey. Donna's father, Bob, felt that Casey was a bad influence and didn't want Donna to date him anymore. Eric was jealous of Casey because he wanted to be with Donna, so Eric wanted them to break up. When Red Forman and Bob were discussing Casey's negative influence with Donna and Casey, Casey broke up with Donna, deciding the conflict with Bob and Red to be too much hassle. Donna felt that she and Casey were in love, but Casey felt "I love you" is just something you could say and don't have to really mean. Michael Kelso said that his brother Casey got bored with his girlfriends and broke up with them. During the summer of 1979, Casey was teaching physical education at Eric's old high school, and Eric was in Casey's class. He likes to call Eric "Foreplay".
Charlie Richardson (played by Bret Harrison) is the son of one of Red's war buddies. Eric held a grudge against him from the time that he let some sick children win "Eric's" goldfish in an egg toss. Charlie only appeared in about three episodes towards the end of Season 7. Before the beginning of Season 8, Charlie accidentally fell off the water tower and died. The water tower is named the Charlie Richardson Memorial Water Tower in his honor. The original idea was to have Charlie stay on the show the entire 8th season as a replacement for Eric, but the actor got an offer for his own show so they killed his character off.
Christine St. George (played by Mary Tyler Moore) is a talk show host of What's Up Wisconsin. In the episode "Sweet Lady", Jackie felt she was destined to be Christine's co-host on the show. She persistently tries to get the job, but Christine St. George makes Jackie her assistant instead. After a few episodes, Jackie was fired for knowing too much about her.
Earl Arthur (played by Robert Clendenin) is a friend of Red's who worked for Red at Price Mart. Earl frequently came to work late and slacked off on his job, so Red fired him. After that, Earl sued Red for wrongful termination, however, Earl arrived too late to his own hearing, so the judge ruled in favor of Red. Later, Earl got a job working at a fast food restaurant, where he is again fired for his poor work ethic (this time for repeatedly eating the restaurant's food while on work). Earl appears in the episodes "Red Fired Up", "Roller Disco" and "Radio Daze".
Edna Hyde (played by Katey Sagal) is Steven Hyde's biological mother. She is only in the Season 1 episodes "Career Day", "Prom Night", and "Punk Chick", though she only appears in "Career Day". She plays a large part in "Career Day", playing opposite Hyde when on Career Day, he has to help her in the kitchen (she was the school chef, "Gross Edna" at the time). In other episodes she only has lines yelling at Hyde on the porch from the inside of the house such as:
In Prom Night Edna: "They're all gonna laugh at you!" (a reference to the 1976 film Carrie) Steven: "Shut up ma, you're makin' the night too damn special!"
In Punk Chick Steven: "It's still my suitcase!" Edna: "Nothing in this house is yours!" Steven: "Shut up!"
Edna then ran off and left Hyde alone, which is why he moved in with the Formans and she is not heard of again until the 4th season where Hyde confesses that his parents got back together and ran off.
Fenton (played by Jim Rash) is someone with whom Fez has a feud due to a "half-off sale, a crowded parking lot and a pair of pants that made Fez's ass look like an oil painting" in Fez's own words. In the fifth season, he was an employee at the jewelry store where Eric bought Donna's engagement ring. He is also the landlord of the apartment that Fez and Kelso moved into in the seventh season, which later became Fez and Jackie's apartment when Kelso moved to Chicago. At first, Fenton did not want to let Kelso and Fez move in because of his feud with Fez, but later when he found out Kelso wanted the apartment to have a place to take care of his daughter, and Fenton got the impression that Kelso and Fez were "life partners", he let them have it. Though Fenton doesn't state this explicitly, his frequent innuendos about men and his lack of experience with women imply he is gay. Whenever he sees Fez, he says "Oh, It's you" in an evil manner.
Hilary Robinson (played by Lara Everly) is Fez's co-worker at the salon where Fez works in season 8. Fez tried to impress her by trying to look cool which intimidated her, but when Jackie explained to her who Fez really was, she fell in love with him. Fez and Hilary dated for a few weeks, before Hilary suddenly decided to become a nun and left Fez.
Joanne Stupak (played by Mo Gaffney) is a girlfriend of Bob Pinciotti, who appears in Seasons 4 and 5. She met Bob at the supermarket when Bob, being unable to cook, was about to buy a dozen TV dinners. Joanne decided to teach Bob to make a meatloaf so he would not have to buy the TV dinners. She does not get along well with Red. When Red and Joanne first met, they got into an argument about who would cook the meat and who would make the salad. Joanne works at the dog food factory and hires Eric to work there to put coupons in the dog food bags. Eric would eventually lose that job after Joanne broke up with Bob.
Mitch Miller (played by Seth Green) is a student in the same class as Eric. Mitch had a feud with Fez and because of this conflict, Mitch published a photo of Fez and Kelso kissing each other in the school newspaper. Mitch had a crush on Donna Pinciotti, and one time Donna went to a wedding with Mitch. Eric was angered when Mitch embarrassed Donna, and Eric and Mitch agreed to fight each other the next day at 5:15 PM. Not wanting to fight, Mitch persuaded Eric not to fight with him by offering him a French-made GI Joe called "GI Jacques". Mitch has a father, Charlie Miller, played by Fred Willard.
Nina Jo Bartell (played by Joanna Canton) is a girlfriend of Fez in season 5 who worked with him at the DMV. Fez lost his virginity to her, but it went badly, so she suggested they needed to do it more often to get better. They broke up a while later because Nina thought he was too needy.
Officer Phillip Otis Kennedy II (played by James Avery) is Kelso's training officer when he joins the police force. He appears mostly in the 6th season, playing a straight ace to the bumbling Kelso.
Pam Burkhart (played by Eve Plumb in Season 1 and Brooke Shields in Season 6) is the mother of Jackie Burkhart who was dating Bob Pinciotti in season 6. Once a serious business lady, she fled to Mexico when Jackie's councilman father was arrested for bribery and embezzling $60,000. She returned to try to fix her relationship between her and Jackie.
Pam Macy (played by Jennifer Lyons) is a classmate of the main characters of the show. She has been mentioned in more episodes than she appeared. She appeared in the episodes "Prom Night", "Romantic Weekend", and "It's a Wonderful life". In "Prom Night", Michael Kelso took Pam to the prom while temporarily broken up with Jackie. In "Romantic Weekend", Kelso was about to have sex with Pam but was unable to perform, telling his friends "The buffer wouldn't buff". Pam told this to the whole school, which caused everyone to tease Kelso about it.
"Pastor Dave" Rogers (played by Kevin McDonald), Pastor Dave is the local pastor at the church. He is overly cheerful and (incorrectly) thinks he is up to date with the trends, and is "hip and cool". He is often greeted by Eric and his friends with deadpan voices, and they typically just agree with Dave in the hopes he'll go away. Dave is good friends with Kitty, who helps with the church fundraisers, and has an uneasy friendship with Red (mostly because Red isn't used to having friends). His friendship with Red seems to have brought out a less-pure side of Dave, as he spends a day with Red watching football and drinking beer, and once even quit the church because he wanted to watch more football on Sundays (he later rejoins as the pastor again). He appears primarily in Season 3 and 4, but has a few cameos in Season 2.
Rhonda Tate (played by Cynthia Lamontagne) Often called Big Rhonda by her classmates, she was a recurring character during season 4. She was Fez's girlfriend during this season. When she and Fez were stuck in the school during a tornado, he was about to have sex with Big Rhonda, but after the tornado was gone, she didn't want to anymore. She broke up with Fez after she choked him after he wanted to get to third base, which came from bad advice from Casey Kelso. Like Fez, she loves candy. The episode "It's a Wonderful Life" featured an alternate timeline, where Rhonda went to the prom with Eric (in this timeline, Eric and Donna were never in a relationship). Later in the same episode, she is seen at their 10-year reunion but now as a trim and beautiful woman (which Rhonda attributes to being dumped by a gigantic loser like Eric). It was also mentioned in the season three episode "Kitty's Birthday" that she was hit by a car but was apparently uninjured.
Roy Keen (played by Jim Gaffigan) is the kitchen manager of the Holliday Hotel who employed Eric, Hyde, and Kelso to work as waiters in the hotel's restaurant during seasons 5 and 6. The character serves as the replacement of Leo who was written out during season 5, although he had been absent for several episodes. It was mentioned by Hyde that Roy was like a father figure when his father abandoned him. Roy has stated that his standards for food service are low and he goes days without washing his hands. Roy served in the Vietnam War, once describing Eric as "scrawny, but strong... like the Vietcong". He suffers from serious trouble connecting to people. At one time he got the impression a woman was in love with him, after she insulted him when he got her some butter, and hid in her shower to surprise her with flowers. He once mentioned he was living with a woman, but moved out when she found out he was living with her in secret.
Samantha Hyde (played by Judy Tylor) is Hyde's wife during season 8. They got married while Hyde was drunk in Las Vegas. The two barely knew each other when they got married. Hyde didn't even remember the wedding and didn't know he was married until after Samantha came to Point Place to see Hyde. In the episode "My Fairy King", Hyde learned that Samantha was already married to someone else. After this, Hyde and Samantha's relationship ended.
Schatzie is a Dachshund that Red gave Kitty in an attempt to make her happy. Schatzie was in several episodes of season 5, was absent for all of season 6, then returned for only one episode towards the beginning of season 7. Red claimed that his absence was due to hiding under the house because he was afraid of the garden hose. "Schatzie" is German and means "little treasure" or "darling" (diminutive of "Schatz").
Timmy Thompson (played by Paul Connor) is a student who went to high school with Eric, Donna, Hyde, Fez, Kelso, and Jackie. To the annoyance of some of the gang, he announces comments to the room that start with "Heeey...", such as:
"Heeey, Forman and Donna got a motel room and they're going to do it!"
"Heeey, I'm taking off my pants!"
"Heeey, Forman's on a date with his mom!"
"Heeey, Donna's showed her ass!" (while showing everyone a yearbook photo where Donna mooned the camera).
He only has real dialogue in the episode "Burning Down The House".
William James "WB" Barnett (played by Tim Reid) is Steven Hyde's biological father. Hyde originally thought Bud Hyde was his biological father until the cliffhanger between the 6th and 7th seasons, where Kitty discovers that Steven's real father is a man who lives in Milwaukee. Sometimes people call William Barnett by his initials, WB. Barnett is wealthy and owns Grooves, a chain of record stores. Barnett put Steven in charge of the Point Place record store along with his daughter (and Hyde's half sister), Angie. Barnett is black, which Hyde believes explains his "coolness, afro and suspicion of the man" (it can also be noted that when Hyde asked him who killed Kennedy his father stated "I don't know, because they don't want me to know"). WB's last on-screen appearance is in the first half of the series finale which is the twenty-first episode of the eighth season, "Love of My Life" (WB had already appeared in the fourteenth episode of that season, "Son and Daughter").
Several characters on the series were written as recurring, but made only one appearance. Among them:
Tina Pinciotti (played by Amanda Fuller) was the younger sister of regular Donna Pinciotti. She first appeared in "Eric's Burger Job", but made no appearances following that, save for a brief mention in the episode "Vanstock". A similar situation occurred with unseen Valerie Pinciotti.
Valerie Pinciotti was the older sister of Donna Pinciotti and Tina Pinciotti, who in "Eric's Birthday" was said to be away at college but never mentioned again.
Buddy Morgan (played by Joseph Gordon-Levitt) was introduced in "Eric's Buddy", and was intended to become a recurring character. However, the introduction of homosexual Buddy as a love interest for Eric (at a time when both Eric and Hyde were competing for Donna) did not go over well with audiences, and Buddy was cut from the show.
Melissa (played by Reagan Gomez-Preston) appeared in "Hyde Gets the Girl" as a potential love interest for Hyde. She was intended to become his on-off girlfriend.
Patty (played by Lindsay Sloane) appeared in two episodes in the series' second season. She is introduced in "Eric Gets Suspended" along with her best friend, Mary (played by Melissa Joan Hart). The two go on a double blind date with Hyde and Fez. Hyde initially pairs with Mary, and Fez with Patty; but in the course of the date Hyde tells Fez to swap dates because he is hitting it off with Patty. Patty then returned in "Eric and Kitty's Night Out". In the episode, Fez and Patty become boyfriend and girlfriend. Patty's role and impact in the episode implies an intention to continue the character's appearance in the series. However, with no explanation in the show Patty is not seen or mentioned again.