Metal Shark Player, also known as Metalshark Player[1] (メタルシャーク・プレイヤー Metarushāku Pureiyā) in Japan, is a hammerhead shark-based Reploid created by Gate to work as a member of a recycling research team.
Obviously, don't nominate any human characters. Hybrids like Cheetah or The Lizard are okay, as are shapeshifters with one set animal form (eg Professor McGonagall.)