Goof: When Ariel captures one of Korb's mutants with her magic, he has gray fur and is wearing a uniform tunic. But from the point when Ookla holds him as Thundarr battles the giant swamp worm, the mutant has brown fur and no tunic. After the battle and the group departs, the mutant is back to being gray-furred with the tunic again. Then, when they present him to the village to confess Artemus and Korb's conspiracy, the first shot of Ookla holding him with his back turned shows him gray-furred. But when he speaks, his fur is colored brown again.