Peaches and the Red-Eyed Winter

She was orphaned at Santa's door step she's different than the other elfs with her 1 black horn sharp teeth with red and black eyes
She's half elf but no one knows what's the other. She wasn't good at normal elf tasks, wrapping presents making toys etc.
She was bullied because of this, an outcast. Santa was nice to her but no one else was. Eventually she snapped and ran away. She found krampus and worked for him for a while. He asked her to ruin Christmas and kidnap Santa which she did. She went on a rampage attacking elf's and taking Santa. She took him to krampus but Santa did not beg to be released he was happy Peaches was ok since she had been gone for a year at this point Peaches realized that her hate had blocked out how good Santa was to her. Santa proposed an idea to help krampus and peaches, that she would be in charge of the naughty list that way she can work for both of them and have a purpose. And that she's come back to the workshop, peaches agrees to try again and krampus thought of her as a daughter (she still visits). So, she found her purpose while still keeping her dark side. After the attack the elves kept away from her for a while but over time, they realized they were in the wrong. Plus elves can go on the naughty list too. She did eventually make friends in the end.