Boo Boo the Funny Gigglepie is an alien of the Gigglepie race.
He makes a minor appearance in the episode, So Totally Spaced Out, where he and the rest of the seemingly-sweet little Gigglepies quickly took over the war planet Yugopotamia after posing as the "Special Surprise Inside" a box of Invader O's cereal. He also made a cameo in Escape From Unwish Island along with Trilly.
Boo Boo the Funny Gigglepie has floppy ears, large magenta eyes with long eyelashes, and a small pink nose. He is colored light blue and bears an antenna on his head with a smiley-face on it to signify that he makes people laugh and smile, probably by telling jokes since when Trilly the Trust Gigglepie introduces Boo Boo, she murmurs that the Boo Boo jokebook is sold separately.
Not much is known about Boo Boo since he only appears briefly in one scene of one episode. Since he has not been heard talking, it is unknown whether or not his voice is high-pitched like the other Gigglepies or if he talks in rhymes. He seems to be just an average Gigglepie, a simple follower of the Gigglepie leader, Overlord Glee.