Theodore Masters Peterson, better known as The Neighbor or Mr. Peterson, is the titular main antagonist of the Hello Neighbor franchise. He is the secretive, reclusive, and arguably insane neighbor and arch-nemesis of the main protagonist, Nicky Roth. In the past, he was an amusement park designer, as well as a very friendly and happy family man; however, after tragically loosing the majority of his family, Mr. Peterson was driven mad, attempting to keep the last remaining member of his…