Shark Anatomy – The character has the form and/or characteristics of a shark.
Armaggon is an evil shark in the TMNT universe (TMNT Mutant Universe Sourcebook #1).
Geoffrey is Mera’s pet hammer head shark (Capstone’s DC Super-Pets Character Encyclopedia).
The Shark (DC) is a major enemy of Green Lantern (DC Who’s Who #20).
Shark Girl (Marvel) is an evil mutant (Wolverine & the X-Men #20).
Mako is a shark humanoid in the Savage Dragon universe.
The D&D universe has several sharks and shark related characters including the Bloodshark (Creature Collection III. Savage Bestiary), Shark Folk (Creature Collection III. Savage Bestiary) and Shark (D&D 4th Edition – Monster Manual 2).