T. Ryamarr was an ODST in the UNSCDF during the Human-Covenant War. He was part of Alpha Team as Bravo-21 with Bravo-22, AKA S. Hartley. He participated on a battle on Earth, covering his comrade as he retrieving what seemed to be a case of M41 SSR MAV/AW Rocket Launcher and then evacuating on a Warthog.