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
Bugs Bunny Scare-um" (1939), directed again by Dalton and Hardaway. This cartoon—the first in which he is depicted as a gray bunny instead of a white one—is also notable as the rabbit's first singing role. Charlie Thorson, lead animator on the film, gave the character a name. He had written "Bugs' Bunny" on the model sheet that he drew for Hardaway. In promotional material for the cartoon, including a surviving 1939 presskit, the name on the model sheet was altered to become the rabbit's own name: "Bugs" Bunny (quotation marks only used, on and off, until 1944). In his autobiography, Blanc claimed