: William's youngest son, Evan (the Crying Child), was killed in a prank gone wrong when his head was crushed by the mouth of the Fredbear animatronic. This event is believed to have fractured William’s sanity.
: Despite the fire, a digital copy of William's consciousness was scanned into a VR game, creating a virus known as Glitchtrap . This entity possessed a beta tester named Vanessa (Vanny), leading to the events of Security Breach at the massive Mega Pizzaplex. Five.Nights.at.Freddys (GamingBeasts.com)
: Driven by rage or obsession, William murdered Henry’s daughter, Charlotte, outside a pizzeria. Her soul possessed the Puppet , a security animatronic designed by Henry to protect her. The Missing Children Incident : William's youngest son, Evan (the Crying Child),
: Using a yellow "Spring Bonnie" suit, William lured five children (Gabriel, Jeremy, Susie, Fritz, and Cassidy) to a back room at Freddy Fazbear’s Pizza and murdered them. This entity possessed a beta tester named Vanessa
: Thirty years after the pizzerias closed, William (as Springtrap) was discovered and moved to a horror attraction. The facility eventually burned down, though his spirit endured.