Mr. Shark is a childish and sensitive great white shark who is a master of disguise and one of the three tritagonists (alongside Ms. Tarantula and Mr. Piranha) in the book series and movie, The Bad Guys.
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.)
