|First Appearance||The Janitor Strikes Back|
|Voice by||Steve Tompkins|
Janitor Poopatine, is a janitor at Fanboy and Chum Chum's school and another major antagonist. He is a parody of Emperor Palpatine from Star Wars.
Several of his lines in his debut episode "The Janitor Strikes Back" (the title, of course a parody of The Empire Strikes Back) are direct parodies of lines spoken by Palpatine and Darth Vader For example, in The Janitor Strikes Back, Poopatine says, "And now gum, you will die," which is a parody of "and now Young Skywalker, you will die.". In episode "Fanboy Stinks", Poopatine attempts to wrangle Chum Chum's pecan log stuck to the floor, falls over and says "The force is strong with this pecan log". Poopatine rides around in a cart named Brenda, who communicates by beeping in a manner similar to R2D2. Poopatine has a strong hatred of gum and saltwater taffy Poopatine tries to destroy the bubble gum monster Yum Yum, until it saves his life. In "The Janitor's Apprentice", it is revealed he has a trash collection and a trash receptacle called the "Dump Star", a parody of the Death Star A running gag is that whenever Poopatine's name is spoken aloud, Chum Chum says, "Poop!".
He is a pale, skinny, gnarled old man who wears a dark hooded shirt.