Baby Tooth is a character who only appears in the episode "The Whole Tooth."
He is a white tooth and wears a light blue hat. His eyes are black.
In some scenes, he can be seen crying if he gets hurt or annoyed. At the end of the episode, he can be seen getting on a ship and waving to SpongeBob, Patrick, and Squidward. Also in the episode, Patrick treats him like an actual baby.