Two unused sprites in the SNES version of the game are demonic parodies of Mickey Mouse and Donald Duck, likely intended for the Tokyo Destinyland theme park, based on the real-life Tokyo Disneyland park.

In the PC Engine release of the game, two much less similar-looking parodies of the characters appear in Tokyo Destinyland as NPCs under the names "Zombie Mouse" and "Demon Duck", possibly as a workaround to copyright issues with The Walt Disney Company due to parodies not falling under fair use in Japanese copyright law.