Matosh is the Titans officer who interrogates Kamille Bidan after he attacks Jerid Messa. A loud spoken and cruel man, he angers Kamille and promptly gets attacked for it. He beats Kamille with a lead pipe for that, but luckily Kamille is able to escape when one of the RX-178 Gundam Mk-II's crashes into the building they are in. Kamille later gets his revenge by shooting at Matosh after he steals one of the Gundams.
In the mange Define, Matosh is killed being crushed to death by a falling building.