Matthew Patrick, aka MatPat, is the nerdiest guy on YouTube, operating the YouTube channels The Game Theorists; The Film Theorists; GTLive, YouTube’s largest livestreaming channel; and The Food Theorists, which gained 1 million subscribers within the week of its launch. Currently at over 20 million subscribers and 60 million monthly views, The Theorists are the Mythbusters for gamers, cinephiles, and foodies, educating viewers while unearthing the secrets behind gaming, food, film, and television's most enduring questions. MatPat is also the creator and host of Game Lab, a YouTube Premium Original series that takes YouTube's biggest gamers off the comfort of their couches and places them into the real life equivalent of their favorite games. The series won the Streamy for Best VR/360 Series in 2016.

Matthew is also a marketing and audience development specialist, using data-based methods to accelerate the growth of social media audiences, particularly on YouTube. His company, Theorist Inc, consults some of the biggest tech and media brands in the world on how to capture and grow an audience online. Over the past several years, Matthew has worked with over 200 YouTube channels across practically every vertical.