Trying to think of characters' feats Death Battle style yields some hilarious results because they have a list of defeated foes that range from dangerous arch-enemies to just rivals they got annoyed with. Case-in-point.

Mickey defeated Pete, Mortimer Mouse, the Phantom Blot, the Mad Doctor, Mizrabel, numerous Disney Villains, Donald Duck

Bugs defeated Elmer Fudd, Yosimite Sam, the Tazmanian Devil, Wile E. Coyote, Witch Hazel, Gossamer, Marvin the Martian, Carl the Grim Reaper, Daffy Duck