Sam, also known as Samhain, is the enigmatic and mischievous protagonist of the 2007 horror film Trick 'r Treat1. Here's a brief overview of his character:

• Origins: Sam was created by film director Michael Dougherty and first appeared in Dougherty's 1996 short film Season's Greetings. He was later featured in the 2007 horror film Trick 'r Treat.

• Appearance: Sam appears as a small child wearing a burlap sack over his head, but he is actually several centuries old. His appearance is reminiscent of a demonic pumpkin, reflecting his connection to Halloween.

• Role: Sam is the living embodiment of Halloween. He enforces the holiday's rules and traditions, punishing those who break them. His actions are driven by a desire to preserve the spirit of Halloween and ensure that its customs are respected.

• Personality: Sam is mischievous and loves candy, but he takes his role as the enforcer of Halloween rules very seriously. He is both playful and terrifying, embodying the dual nature of Halloween itself.
  
  While Sam respects those that respect his holiday, he despises, and even hates, anyone that doesn't. He can be destructive, mischievous, and even evil towards those who disrespect his day. Sam can even go as far as being deadly. He will stab, tear, maim, and kill. He will use his Halloween magic and skills to dismember, decapitate, disembowel, any that insult his holiday.