The Fairly OddParents - Season 3 Episode 15 -

Set during the episodes "Totally Spaced Out" and "Spaced Out!", Mark Chang comes to earth and tells Timmy that his planet has been invaded by a cute alien race known as the Gigglepies. Since the Yugopotamians are afraid of anything nice and sweet, they are powerless against them. Timmy departs to fight the menace.