Bugs Bunny had been in "Hare-um Scare-um" and as cool and collected as in "Prest-O Change-O". Immediately following on "A Wild Hare", Bob Clampett's "Patient Porky" (1940) features a cameo appearance by Bugs, announcing to the audience that 750 rabbits have been born. The gag uses Bugs' "Wild Hare" visual design, but his goofier pre-"Wild Hare" voice characterization. The second full-fledged role for the mature Bugs, Chuck Jones' "Elmer's Pet Rabbit" (1941), is the first to use Bugs' name on-screen: it appears in a title card, "featuring Bugs Bunny," at the start of the film (which was edited in following the success
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the Game Boy version, Kemco's license to develop and/or publish video games based on "Who Framed Roger Rabbit" became outdated; however, they still had the license to create Disney-based video games, which they used to create "Mickey Mouse" for Game Boy.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