Jeffrey Dahmer was an American serial killer and sex offender of men who was incarcerated in 1992, and who died in 1994. He appeared in the episode, “Hell on Earth 2006” and “Mr. Hankey's Christmas Classics” in the song “Christmas Time in Hell” as one of many the residents of Hell.
He was given the task of picking up Satan's Ferrari cake, along with John Wayne Gacy and Ted Bundy, but the trio fell into several Three Stooges-esque antics, with Dahmer playing the role of "Larry". He murders one of the chefs assigned to deliver the cake when asked why he did it he replied that the chef snuck up on him. When John Wayne Gacy murders a pedestrian, he claims he did it for Dahmer and when Dahmer sees this, he tears out the organs of the man and starts humping them and later starts eating the man's arm.
Eventually, the cake is destroyed and they have to bake a new one. He claims to be the only cook among the trio but left the school because there weren't enough Italian people to eat. In the ensuing altercation, Ted Bundy cuts his tongue off. In return, Dahmer stabs Bundy in the ribs and then through the roof off his mouth. Dahmer's skull is then bashed in with a rolling pin by a blinded Gacy.
Jeffrey Dahmer wears an orange jumpsuit, presumably from a prison, over a black under shirt. He has wavy blond hair, blond eyebrows, and visible signs of stress. In “Do the Handicapped Go to Hell?”, he was depicted with a real picture of him pasted on a body but this was later changed to an SP-style face in “Hell on Earth 2006”.
- “Mr. Hankey's Christmas Classics” - Satan sings that he is buying Christmas ham, having sex with it, and eating it.
- “Do the Handicapped Go to Hell?”
- “Hell on Earth 2006” - Him, John Wayne Gacy, and Ted Bundy are ordered to bring a Ferri Cake to Satan Halloween party.
- He and the other two killers were characters destined to appear in South Park: The Stick of Truth but were cut in the final version. Their friend icons can still be found in the game files.