6. Sam (Give Him Treats/Abide By Halloween Traditions)
Sam is the pint-sized antagonist from the highly acclaimed horror film Trick 'r Treat Initially appearing as a seemingly innocent masked trick-or-treater, it soon becomes apparent that he's actually a demonic pumpkin-like creature who acts as the enforcer for the rules and traditions of Halloween. He's the common link in each of the connecting short stories that make up the movie and his role in each of them is to ensure that all of the characters adhere to Halloween tradition and, if they don't, he will kill them. So, if you're nice to Sam and play by his rules, he's nice to you - you've essentially beaten him (or at least avoided your own otherwise inevitable death). If you don't play by his rules, he'll pull out your insides.