 "Timmy 2000" also shows his parents, Richard and Helen, having similar disabilities and using wheelchairs, and their vocabularies being mostly limited to their own names.When Jimmy is introduced in the season five (2001) episode "Cripple Fight", Timmy becomes jealous of Jimmy's popularity, and the two get into a violent brawl in a parking lot.The two make amends, and are depicted as friends in subsequent episodes.