Patrick plays Agent Cabe Gallo, the security agent tasked with managing O'Brien and his motley assortment of geeks Toby Curtis (Eddie Kaye Thomas), Happy Quinn (Jadyn Wong) and Sylvester Dodd (Ari Stidham). In a curious turn, the real Walter O'Brien is a consultant on the show. He has been front and centre as the US network CBS has wheeled out the show's producers and stars to the international media. And he is present on set, where he offers the writers a conduit to his world.