Killer is a half skeleton, half red bull shark merman. his upper body is that of a skeleton's, with slightly rounder features. He has sharp shark teeth. there is a red, target-shaped soul floating above his sternum. Killer also has black liquid running from his eyes, which somehow doesn't come off in the water. his eye sockets are pitch-black but rarely will have one light in them. he is a very flirty, playful and curious guy. his torso is a meter long, his tail being about two and half meters.