The robber is a character who first appears in the episode "The Card."
He is a light orange fish with light olive green lips and wears the black and white stripes of a prisoner, as well as a black mask that covers his eyes, and a black beanie. He wears light blue trousers. His outfit looks a little different from other robbers.
In the bank, SpongeBob is holding up the line. The robber, irritated, says, "Some of us have withdrawals to make, you know!" He actually meant that he was trying to steal from the bank, and SpongeBob was delaying him.