Graham Nicastro (also known as TeddyGramEsq) was the lawyer, business developer and tabletop strategist for Game Grumps. Graham did the legal work while Brent does the actual managing. He worked for them from November 2013 to October 2014.
He was first mentioned by Ross in the first episode of the King's Quest V play-through. Even though he had yet to officially appear on the show, he appeared alongside Arin, Barry and Ross streaming Destiny on the Game Grumps Twitch on September 9th, 2014. He also took over the official Game Grumps instagram on September 19th, 2014.
He is also given a special thanks in the credits for Arin's Sequelitis about A Link to the Past vs Ocarina of Time.