William Afton (FNAF Books)

"And if you trigger those spring locks, two things will happen: first the locks themselves will snap right into you, making deep cuts all over your body, and a split second later, all the animatronic parts, all that sharp steel and hard plastic will instantly be driven into your body. You will die, but it will be slow. You’ll feel your organs punctured, the suit will grow wet with your blood, and you will know you’re dying for long, long minutes. You’ll try to scream, but you will be unable to: your vocal cords will be severed, and your lungs will fill with your own blood until you drown in it."

- Afton to Carlton.

William Afton, otherwise known as Dave Miller and later Springtrap, is the main antagonist of the novel Five Nights at Freddy's: The Silver Eyes and it's follow-up The Twisted Ones. He is an alternate version of William Afton and/or Michael Afton from the original games series.

Personality
William Afton is an incredibly sadistic and extremely dangerous, calculating, fearsome, merciless, evil-minded, patient, two-faced, psychopathic murderer and horrible individual, totally devoid of compassion and humanity.

Most of his life outside of the franchise is unknown, but it's heavily implied that he had a very miserable existence, to the point that he felt that life owed him for his sadistic behavior.

He kills any witnesses to keep from getting caught, which shows his cowardly side. Neverthless, he is still a determined and extremely fierce serial killer, who will not hesitate a single moment to get in a fight with any of his foes.

He is also rather ungrateful, having killed Henry's son despite the fact that if it wasn't for him, then the franchise wouldn't have achieved its earlier success.

He sometimes appears as a compassionate man, but like many serial killers this is just a mere facade that he uses to manipulate others, espetially the children. After he realized that the child's souls are trapped into the cursed place, Afton actually believed to be good, while he was in fact trapping his victims' souls into the animatronics for ever. In his delusional moments, he refers to his victims as his "family".

Appearance
Afton was described as being obese around the time that the serial killings occurred, but he eventually lost that weight while in his Dave Miller persona. The most notable trait concerning Afton, however, is the series of scars that could be found on the back of his neck and body. It was revealed that he had survived a previous spring locks incident, though he barely escaped with his life.

As Dave, William is stated to be tall, and his security guard uniform didn't seem to fit him. He most likely had some longstanding illness, as his skin was described as being sallow in appearance.

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 the Spring Bonnie suit, and he kidnapped and murdered Samuel, Charlotte's twin brother, when they were both toddlers.

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, 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.

Ten years later, a memorial was held by the parents of the late Michael Brooks, and Charlie and her childhood friends return to Utah to attend it. They meet with a security guard named Dave while they were revisiting the pizzeria for the third time; they begrudgingly take him along, but Charlie notices a series of scars on the back of his neck.

Dave goes into the backroom, and he retrieves the Spring Bonnie suit, thus revealing that he was the killer all along, and he kidnaps Carlton, one of Charlie's friends, putting him in a spring lock suit. When the group of friends notices that Carlton was missing, they report it to the police department, but action wasn't immediately taken, due to Carlton's habit of being a troublemaker.

A police officer does go to the pizzeria to investigate, but he's immediately stabbed to death by Afton. Carlton wakes up to find himself in an old, malfunctioning springlock suit; William warns him about making any sudden movements, and he takes his shirt off, revealing more scars from a springlock incident.

Charlie and her friends return to the pizzeria to search for Carlton. William confirms that the animatronics were being possessed by the ghosts of the children, and that they were going to kill Charlie and her friends out of confusion. When told that they would also kill him, he expressed no concern, stating that as long as he had the Spring Bonnie suit on, he would be safe from the children's wrath.

As the group was about to leave the pizzeria, Afton grabs Charlie by the back of her neck, and threatens to choke her to death. Remembering how the spring lock suits operated, Charlie reaches into the neck of the suit and sets off the spring locks, piercing Afton and killing him slowly. The main animatronics - Freddy, Chica, Bonnie, and Foxy - appear, and they drag the dying Afton away.

The Twisted Ones
Afton returns as the main antagonist in the next book. His soul is now cursed into Springtrap.

The Silver Eyes

 * Samuel : Charlotte's twin baby brother. He was kidnapped at Fredbear's Family Diner by Afton, while he and Charlie were hiding in one of the closets.
 * Michael Brooks : lured to the backroom of the pizzeria; friend of Charlie and the others.
 * The other four children that he lured into the backroom of the pizzeria.
 * Officer Dunn : stabbed to death when he was trying to find Carlton.

The Twisted Ones

 * Tracy Horton : put in a Springlock Suit, before her body was left to die in a Cow's field.
 * Charlotte : killed by his Twisted Animatronic

The Silver Eyes
"I helped him create."

- Afton getting interrogated.

"They are home with me."

- Afton on the kids he had killed.

"There isn't a way out anymore. All that's left is family."

- Afton

"Oh, you're something beautiful, aren't you?"

- Afton to Charlie.

"When they awaken; the children's spirits will rise. They will kill you. I'll just walk out in the morning, stepping over your corpses one by one."

- Afton

"They don't remember; they've forgotten. The dead do forget. All they know is that you are here, trying to take away their happiest day. You are intruders. You are grown-ups."

- Afton stating his confidence at the possibility of surviving the night.

"Because I am one of them."

- Afton professing his faith in the Spring Bonnie suit.

"You are staying; I will kill this one right here, while you watch, unless you do as I say."

- Afton threatening to kill Charlie; also his final words.

The Twisted Ones
""I’ve accepted the new life that you gave me. You’ve made me one with my creation. My name is Springtrap!”"

- William accepting his fate to be Springtrap

"Did you think my robots would be as poorly designed as your fathers?"

- William as Springtrap to Charlie.

Trivia

 * The manner in which Afton meets his end is noticeably different from his son, Michael Afton.
 * It is speculated that he will be the main antagonist of the upcoming film adaptation of the series.
 * This version of the killer from Five Nights at Freddy's is far more malevolant than the canonic one's, as he has absolutely no remorses for his crimes nor good intentions, even if he is enough deluded to believing being good.
 * In addition, he is the only Five Nights at Freddy's villain who is Pure Evil.
 * This make him in many ways similar to Donald Love from Grand Theft Auto III/LCS: the two appear to be harmless at first, but are utterly depraved individuals who are the only characters of their long-running franchise with many villains to qualify as Pure Evil.