Matthew Robert Patrick, more commonly known by screen name MatPat, is an American actor, writer, and internet personality. He is best known as the creator and narrator of the YouTube webseries Game Theory, and the spinoff Film Theory, centering around cinema and internet filmography instead of gaming, his gaming channel GTLive, and the YouTube Red series MatPat's Game Lab. He recently made a cameo in Five Nights at Freddy’s (2023).