Many of the main actors on Beverly Hills, 90210 did guest spots on the show.
The character "Evil Eye Weevil" was a parody of Evil Knievel and Elvis Presley.
The character "X-Terminator" was a parody of the Terminator.
The British cartoon "Avenger Penguins" which premiered the same year is a counterpart of "Biker Mice from Mars". That cartoon is about three bike riding Penguins that protect Big City and it's citizens from the evil insane and reclusive scientist known as Caractacus P. Doom.
The characters Hacka and Honka Loogie from the episode entitled "We don't need no stinkin' city" were based on the Hanz and Franz characters on Saturday Night Live.