Johnny Squares only appears in the movie for about 3 minutes. He is a rock star, who is seen filming a video for his latest single - Welcome to the Jungle by Guns 'n' Roses. We see Jim (credited as James ) Carrey lip sync his way through most of the song, pulling some great rock star poses. He dies by the hand of the killer (bad guy) a few moments later while partaking in some drugs in his trailer.