Jeff the killer who real name is Jeffrey Dahmer is real. However, he died in 1994 while he was in jail. He was a serial killer and a sex offender who murdered 17 men and boys from 1978 to 1991. Jeff is a story created by a Creepypasta website to cause nightmares.
Jeffery Dahmer aka Jeff the Killer is a real life person but he doesn't look like when you go on goole images and type in Jeff the Killer. There is a legend and a true story here is both:
Once there was a boy named Jeff. Jeff was ordinary until High School. He got bullied alot and one of the bullies burned off his eyelids so he couldn't sleep. That night he murdered his family and he got a knife and hwe cut his face into a smile and painted his face white. Then he became a serial killer. Legend has it that he's still out there. He might be standing with a bloody knife at your bedroom at 2 or 3am saying: Go to SLEEP...
There was a guy named Jeffery Dahmer and he was ordinary until he got hit in the head with a 10lb dumbbell. He became mentally sick, and ge murdered 17 Men and Boys. Then in 1991 he got arested and in 1994 he got beat to death.