<Li> Jackie Burkhart (portrayed by Mila Kunis): The youngest member of the group, Jackie starts the series as the pretty, rich, spoiled, selfish, conceited, annoying, and immature girl . She makes thoughtless and superficial comments, which occasionally turns out to be correct . As the series progresses, after her wealthy father is jailed and her mother (first played by Eve Plumb in an early episode, and later, permanently, by Brooke Shields) abandons Point Place, Jackie becomes less self - centered and is forced to take a job . She becomes more needy of genuine love and affection . 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 original group: Kelso, Hyde, and Fez . </Li> <Li> Michael Kelso (portrayed by Ashton Kutcher): 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 Jackie wants to marry him and he isn't ready, so he runs away to California with Donna in the Season 4 finale . 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 . </Li> <Li> Steven Hyde (portrayed by Danny Masterson): Eric's best friend and the anti-establishment member of the group . By the end of season one, Kitty Forman prevails on her husband to allow Hyde to move in after he was abandoned by his mother (played by Katey Sagal) and living in squalor . Hyde has a witty, blunt, and sarcastic sense of humor, and a rebellious personality . He is also smart and realistic, and the other group members often ask for his advice . Although Hyde dates Jackie for three seasons, they eventually part and in the final season he marries an exotic dancer named Samantha, who, unknown to Hyde was still wed to her first husband (Sam McMurray) 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 . Hyde gets an attractive, straight - laced step - sister from this newfound relationship . Barnett, who owns a chain of record stores, makes Hyde first the manager, and later the owner, of the Point Place store . </Li> <Li> Donna Pinciotti (portrayed by Laura Prepon): Eric's longtime girlfriend (and briefly fiancée). Donna is intelligent, good - looking, and a feminist . Although she does not 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 . </Li>

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