The wolf is my favorite. A canine's head with a snake's tongue (in other shots), a shell and a mace tail make it the most varied of them all. And for some reason, 4-legged creatures look more evil than the bi-peds. EDITED TO ADD: If it helps you to make your decision, imagine all the Transorganics were the size of the dweller. AFTERMATH THOUGHTS: Ape, bear, and camera would all place 2nd. Bird is third because I believe it could take out any bird-former (cassettes, Wingspan, Divebomb, etc. Even Sky apart from the Lynx is too big a target. You saw the Transorgan puncture a sweep. Dweller would be next as a harmful earthworm. Whitesnake is much better off as a band. It was just too plain here.