William Afton
William Afton, the co-founder and owner of Fazbear Entertainment and Afton Robotics, LLC, as well as a serial killer directly and indirectly responsible for most of the incidents and tragedies throughout the series, including being the culprit involved in The Missing Children Incident. Springtrap, previously known as Spring Bonnie, is the main antagonist of Five Nights at Freddy's 3 and the withered form of Spring Bonnie. He is possessed by William Afton, the main antagonist of the series.