This unnamed creature with a detachable torso who  appeared in the episode Sea Legs where it's legs had been stolen by Captain K'nuckles.When Flapjack encounters the moster he informs him that K'nuckles has stole his legs which angred him.Later on in the episode he and Flapjack find K'nuckles causing havoc.Soon the two fight which end up with the monster winning and K'nuckles legless.