Sethaniel "Seth" Brundle, or better known as Brundlefly, is the titular main protagonist, as well as the main self antagonist of David Cronenberg's 1986 remake of The Fly.
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.)
