The characters Mrs Crabtree, Chickenlover and a clown were originally intended to be playable characters and not just level obstacles. This is suggested by the character menu portraits and sound files found in the game's files.

Despite only being not playable in the Nintendo 64 version, the characters Ms Cartman, Mrs Broflovski, and Scuzzlebutt, and extra skins for characters, can be found in the game's files.

Mephesto's vehicle is the DeLorean time machine from "Back to the Future".