Jeff was a 13-year-old who moved to a new neighborhood with his brother, Liu, and their parents. On their first day of school, they were accosted by 3 bullies named Randy, Keith, & Troy, whom Jeff brutally beat up after they threatened them with knives. Liu took the blame for it and was arrested, sending Jeff into a deep depression. The bullies later attacked Jeff again at a party, and Jeff killed one of them, but not before getting covered in bleach and lit on fire by Keith. During this fight, Jeff's mind permanently snapped.

When Jeff woke up, he was at the hospital and his head was wrapped in bandages. When the bandages were taken off, it was revealed that his face had become disfigured and ghastly pale from the burns, with bright red lips and a leathery texture. Jeff said that he liked his face this way and laughed hysterically, but the doctor foolishly thought that this insanity was merely a side effect of the painkillers and let Jeff go home.

Later that night, Jeff's mother found him carving his face into a permanent smile so that he would no longer have to exert energy to smile, as he put it, and burning off his eyelids so he could always see his face. Jeff's mother went to her husband to tell him that their son had gone completely mad and needed to be killed, but Jeff caught them and stabbed them to death. This woke up Liu (who was recently released), with Jeff telling him as he was about to plunge the knife into his body, "Go to sleep".

Jeff then went on a serial killing rampage, killing those who refused to sleep at night, and as the story continued, Jeff renamed himself "Jeff the Killer".

Key Facial FeaturesSkin: Pure, chalky white and leathery, resulting from a severe chemical and fire-related accident.Eyes: Rimless, lidless, and unblinking because he burned off his eyelids with a lighter, leaving his eyes wide and dark.Smile: A bloody "Glasgow smile" (a slash from ear to ear) that he carved into his own cheeks with a knife.Hair: Long, messy, and singed black.Build and ClothingBody Type: Generally described as a slim, thin, yet deceptively agile teenage or young adult male.Attire: Wears a plain white hooded sweatshirt (often stained with the blood of his victims) paired with black dress pants or skinny jeans

-had a one night stand with Guest

The Slender Man is a supernatural creature with nebulously defined characteristics and abilities. In almost every description of the Slender Man, his attributes will vary, sometimes greatly. However, his basic appearance and traits are relatively consistent across different accounts. He generally appears (in modern times) as a tall humanoid creature in a black or grey suit, red or black tie, and white shirt. His face is totally white, completely devoid of facial features. He has no hair, and generally has normal-looking bare hands, albeit with fingers longer and bonier than a typical human. Slender Man has been depicted in imagery and literature at anywhere between 6 and 10 feet tall, depending on the situation, though in a video he is usually only around 6-7 feet tall. He’s like the dad of the group

Hair: Long, messy blonde hair with choppy layers and long bangs that fall heavily over his eyes and forehead.Face and Skin: Pale, desaturated skin with a cold greyish undertone. He has very prominent, deeply shadowed dark circles and hollowed-out shading around his eyes, giving him an exhausted or undead look.Eyes: Dull, dark red pupils that peek out faintly from behind his bangs.Mouth: A wide, unnerving smirk exposing small, pointed fangs or sharp teeth on his upper jaw.Ears: Extremely long, slender, pointed elf-like ears extending outward from his hair.Attire: A dark green, hooded tunic or shirt