William Afton is a character (and main antagonist) of the Five nights at Freddy's series
in the book he is described as a large man who was always so "happy" constantly smiling
His first appearance was in the minigames from FNAF2 that rarely occur after death. in the 8-bit minigames he is a Purple/violet smiling man with dark soulless eyes and in the save them minigame he has a badge and small white dots in his eyes.
William is the
co-owner of "Fazbear Entertainment" and the owner of his robotics company "Afton Robotics".
He has 3 children Michael (his oldest son), Elizabeth (his daughter), and the crying
child (his other son).
William is also responsible for the MANY... MANY missing children at "Freddy Fazbears Pizza", he lured each of them to the back room wearing a yellow spring-lock Fredbear and Bonnie suit, where he killed each of the kids he kidnapped and hid the bodies in the animatronic characters. After being almost caught by the
police, he skipped town changed his name to Dave Miller and lost ALOT of weight to the point that, when he returned, nobody recognized him.
years later
William/Dave returned to Freddy's and dismantled each of the animatronics, but the ghosts of his victims were possessing the suits, and chased
William into the hidden off-camera Safe-room.
William hid inside of the spring-lock Bonnie suit and ended up dying from a Spring-lock failure, and was locked in the room for 30 years still "alive" in that suit.