He is a blue ice cream glass cup with a turquoise ice cream scoop on it. Some ice cream drips down the sides of the cup to resemble arms and on the front to resemble a nose. The scoop also has yellow eyes with red pupils.
Role in episode
CreamBob shows him, along with the rest of the main ice cream-themed characters in Pint Bottom, to SpongeBob and Patrick. It is then implied that he, along with everyone else in Pint Bottom, was eaten by SpongeBob and Patrick.