The Caped Cod is a demented homicidal cod who proclaims himself as ruler of the sea. Delusionally, he believes garbage items are his royal subjects. He first appeared in The Dog Who Cried Fish. When he first saw Dudley, The Caped Cod got paranoid and thought that he was the king of land because of the toy crown he was wearing. Suspicious, he battled him for his "kingdom" and lost, then tried to flood the city but got captured in the end. Jailed in a clam at the Petropolis Aquarium for the criminally insane, he vowed revenge on Dudley. In Doom and Gloom, he was seen inside a fishbowl at Petropolis Prison. It could be possible that he was temporarily transferred there.