William Afton (The Silver Eyes)

William Afton was once the CEO of Fazbear Entertainment, before it was shut down. He got Springtrapped by Charlie in 1995.

He is also the creator of The Twisted Animatronics, and can control them.

--In the ETQAY Saga--

A robot that claimed to be this Springtrap appeared on the Death Star to reveal this identity, mistaking Nightmare Springtrap for Micheal Afton (Who is actually Timmy, since Springtrap is William from the games, and Timmy is Springtrap's son? Who both is and isn't purple? What? Plot hole alert!)

It was later revealed, however, that this robot was designed by Scott to replace the first Springtrap after he went rogue and became a Nightmare, going against the script. This one was specifically programmed to never break character, because if he always acted like the canon Springtrap would, canon would never be broken again.

However, the world was confused with two Springtraps, and thus adjusted the new Springtrap to the nearest parallel dimensional counterpart, which happened to be the book Springtrap. This resulted in him never breaking Book Springtrap's character.

It's possible that this also caused the (destroyed) Twisted Animatronics to materialize, to avoid narrative contradiction.

What Scott didn't know, however, was that canon in fact was not broken after all...