The Epic Tales of Captain Underpants Season 2 Episode 12
Captain Underpants and the Taxing Trauma of the Treacherous Tattle Trials (1)
A final exam sends George and Harold to the Doom Dome, where they must battle Melvin -- who's been injected with powerful nanobots -- in order to pass.
Guest Stars
Kevin Michael Richardson
Diddlysaurus / Fingers (voice)