William Afton is the co-founder of Fazbear Entertainment, as well as the main antagonist of the video game series, Five Nights at Freddy's. Before he became Springtrap, he was a psychotic middle-age man who's favourite hobby is to execute kids and building animatronics. His voice should be cruel, twisted, malicious, methodical, intelligent & cold-blooded with a British accent. Take the opening scene from Sister Location as an example.