William Afton (FNAF Books)

William Afton, otherwise known as Dave, is the main antagonist of the 2015 novel Five Nights at Freddy's: The Silver Eyes by Scott Cawthon and Kira Breed-Wrisely. He is an alternate continuity take on the Killer from the original games.

The Silver Eyes
According to the novel, Afton originally owned Fredbear's Family Diner alongside Charlie's father, Henry. Being the mechanical genius that he was, Henry created the two springlock suits, one in which William would use in his killing sprees. On Halloween, 1982, Afton donned on the Spring Bonnie suit, and he kidnapped and murdered Sammy, Charlie's baby brother. While William was suspected of committing this murder, he wasn't charged; as a result, the diner ends up closing down. Freddy Fazbear's Pizza was established a few miles south of Hurricane, Utah, and, once again, Afton disguises himself as Spring Bonnie, and he lures five children to the backroom, murders them, and hides their bodies. One of his notable victims was Michael Brooks, who later went on to possess the Golden Freddy costume. This time, Henry is also suspected of committing the murders, but, considering that the bodies were never found, he was let go. Out of grief, Henry commits suicide, and the pizzeria is closed down, and a mall was built over it.