(Art by @DeviTheDevil2 on X) Cassidy is the name of the soul within Golden Freddy, and the most vengeful of William Afton's victims. Originally one of the five children from the Missing Children Incident, Cassidy possesses Golden Freddy and is typically considered the most powerful of the Missing Children, and the most hateful. Whereas the other possessed animatronics display slight supernatural ability, Cassidy/Golden Freddy is able to teleport, cause hallucinations/mental assaults, etc etc.