The Nuka-Killer is a character mentioned in Fallout 4.
The Nuka-Killer was a pre-War serial killer operating in the greater Boston area. It is unknown exactly how many victims he or she had, but it is known that he had at least three: Gonzales, Yavits, and Wright. Details about the murders are found on the Nahant Sheriff's Department, East Boston police station, and Coast Guard Pier evidence terminals. The Nuka-Killer evidently got their name from the fact that they stuck Nuka-Cola bottlecaps in their victims' eye sockets, who would also always have water damaged clothes. The killer was under investigation by Federal Officer A. Jeanette of the Serial Homicide Division.
The Nuka-Killer is only mentioned in Fallout 4.