The show was created as a lighthearted spoof of early sitcoms, and the 70's in general. It has since grown beyond that niche, but it often returns to it as a good source for humor and story ideas. Among the major characters on the show are Eric Foreman (ostensibly the main character); Eric's parents, Red and Kitty Foreman; Eric's slutty sister Lori; Donna, Eric's girlfriend (I'm not even gonna try her last name, sorry); Donna's parents, Bob and Midge, neighbors to the Foremans; Michael Kelso, the "dumb one"; Jackie (I don't remember her last name), Kelso's girlfriend (at times); Stephen Hyde, Eric's friend who's living with the Foremans since his mom ditched him; Hyde's stoner boss/friend/mentor, Leo; and Fes (generally pronounced "Fez"), the foreign exchange student.