The Angry Beavers - Season 4 Episode 14 Muscular Beaver 5
Overview: Everyone, especially Norb, is relieved when Dag decides to mimic his comic book hero Muscular Beaver and go into disillusioned retirement. His retirement is short-lived when he discovers that all along Norb has secretly enjoyed dressing up as his nemesis Baron Bad Beaver. The boys must fight one more super battle to end all super battles.