Billy is known for being slow with a low IQ and causes the most trouble for the three as a result. He wears a red hat, dark blue pants, a white shirt striped dark blue, red shoes and has a big pink nose. Billy is often kind to Grim, although he is seen by Mandy as more of a servant than an actual friend. His biggest fears are clowns and insects and often uses tangelos to ward them off. Overall Billy has a friendly personality.
- Billy was voiced by Richard Horvitz who also voiced Zim, Alpha 5 and Kaos.
- He will first appear in Pooh's Adventures of The Pagemaster.
- Here are his statements refering to the characters:
Adventure = a pirate
Fantasy = a fairy
Hound of Baskervilles = a puppy
Horror = a turtle