Santa Claus: fat, jolly, homicidal. St. Nick is usually a force for good, but every once in a while, Santa (or someone dressed like him) goes on a festive killing spree.
Billy Chapman (Silent Night, Deadly Night)
Little Billy's childhood trauma ruined Christmas for him -- and ultimately, for all of us.
Source: basementrejects.com
Ronald Jones Jr. (Silent Night)
In this year's loose remake of Silent Night, Deadly Night, we lost killer Santa's backstory but gained a really frightening mask.
Source: cdn2-b.examiner.com
Joulupukki (Rare Exports)
Do not go looking for evil Finnish Santa: he doesn't want to be found.
Source: static.guim.co.uk
Krampus (Alpine folklore)
Krampus is a terrifying Christmas demon, as seen on The Venture Bros. and American Dad. He's actually the anti-Santa, but he's scary and festive enough to be included here.
Source: etsy.com