Mobil Disney Comics #1

Mickey volunteers to help Goofy clean out his attic but in the process, Goofy falls and hits his head. The bump on the noggin causes him to believe he is his great uncle Jeremiah Van der Goof, a noted bare-knuckles prize fighter from the turn of the century. In the short span of ninety days, Goofy the Battler fights his way to a world championship bout.