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The Aggravated Assault of the Alien Armada is the 6th episode of The Epic Tales of Captain Underpants in Space! and the Season 4 finale.


George and Harold discover that the Biglyans are using Melvin to enslave humans, so they escape in the Littleite ship. It turns out the ship is remote-controlled because Shifty Fitzgibbons is actually a Littleite named Itsius Bitsian, who was hiding his idenity from the Biglyans to protect his ship. Unfortunately, he failed and is unable to help them. No one would help George and Harold stop the Biglyans (not even Moxie Swaggerman), so George and Harold and Captain Underpants and the M.I.S.F.A.R.T.S have no choice but to battle the Biglyans alone.