Ok so basically
He was created by Magic Man (someone else's OC) to kill Mr, but he didn't turn out well, and not only didn't look much like him, but was kind, and didn't want to kill. So Magic Man cursed him, that he would painful twist and contort, as well as large, sharp, bone like structures piercing his skin. (He is immortal, but this is very painful) The only way to stop that was to kill something every few hours. He lives in the woods, having fled from Magic Man, often resorting to killing animals.