Bugs Bunny in Double Trouble Seven of the levels are based on the Bugs Bunny cartoons "Duck! Rabbit, Duck!", "Bully for Bugs", "Knighty Knight Bugs", "Hare-Abian Nights", "Spaced Out Bunny", "Mad as a Mars Hare", and "Hare-Way to the Stars", while the other level, entitled "Haunted Hare", is based on elements of "Bewitched Bunny" and "Hair-Raising Hare". On the Game Gear version, the "Bully for Bugs" level is altered to instead be named and based on the cartoon "Roman Legion-Hare", though similar gameplay is maintained. The "Spaced Out Bunny" level is absent in the Game Gear version as well. Each level features objectives, designs, and
Development of Bugs Bunny mouth, and his ears were changed slightly as well. It is worth noting, however, that "Patient Porky" (September 14, 1940) featured a cameo by this prototype Bugs Bunny. The cartoon was so successful that WB decided to keep him on as a recurring character, eventually becoming the studio's most popular cartoon character. The character's name, previously only used on model sheets, became the official all-purpose name as well, with one modification: the apostrophe was dropped from his first name (now pronounced "bugs" rather than "bugs-es"). A title card saying "featuring Bugs Bunny" was slapped onto "Elmer's Pet Rabbit" after initial