Continuity mistake: In the "Chocolate Sailor", when they get into the boat, Billy is chocolate, and then the next shot he is normal, and the next shot he is chocolate again.
Grim & Evil (2001)
1 mistake in show generally
Starring: Grey Griffin, Richard Steven Horvitz, Vanessa Marshall, Greg Eagles
Billy's Mom: Oh sorry, Billy. We weren't laughing AT you, we were laughing with you.
Billy's Dad: I was laughing AT you.
Fiend is Like Friend Without the 'R' - S1-E4
Trivia: Nergal is the villain introduced in this episode. "Nergal" originally was the name of the Babylonian God of Fire and Guardian of the Underworld. In the Bible, he is one of the demons allied with Satan himself. In the series Nergal is associated with the underworld and fire.