10. The Artificial Intelligence in Kill Switch
9. The Chameleon-like Forest Creatures in Detour
8. The Jersey Devil in Jersey Devil 
7. Big Blue in Quagmire 
6. The Parasitic Arctic Worms in Ice
5. Eugene Victor Tooms in Squeeze and Tooms
4. The Flukeman in The Host
3. Donnie Pfaster in Irresistible and Orison
2. The Black Oil
1. The Cigarette Smoking Man

via yesbutnobutyes