Bugs Bunny that another proposed name for the character was "Happy Rabbit." In the actual cartoons and publicity, however, the name "Happy" only seems to have been used in reference to Bugs Hardaway. In "Hare-um Scare-um", a newspaper headline reads, "Happy Hardaway." Animation historian David Gerstein disputes that "Happy Rabbit" was ever used as an official name, believing that the only usage of the term was from Mel Blanc himself in humorous and fanciful tales he told about the character's development in the 1970s and 1980s; the name "Bugs Bunny" was used as early as August 1939, in the Motion Picture Herald,
The Bugs Bunny Crazy Castle of the film, Kemco decided to use Bugs Bunny, due to him and Roger Rabbit both being rabbits, making it easier for Kemco to modify the "Roger Rabbit" game and release it outside Japan as "The Bugs Bunny Crazy Castle". For the Game Boy version, Kemco's license to develop and/or publish video games based on "Who Framed Roger Rabbit" became outdated; however, they still had the license to create Disney-based video games, which they used to create "Mickey Mouse" for Game Boy. An early beta version of the game shows the working title as "Bugs Bunny Fun House". "The Bugs