Deaton is a marine Corporal in the Annihilators. A member of A Company, he is a skilled poker player. This suits just fine, considering the Company's perpetual poker game, a pile of chips always found in front of him.
In the weeks leading up to the fall of the Confederacy, Deaton, along with the rest of the unit, was involved in the war against the zerg, only to be recalled to Tarsonis to help the Ghost Program recover an untrained recruit. Along with Wrangler Malcolm Kelerchian, Deaton and the rest of the unit were dispatched to the southwestern district of Tarsonis City.
With the recovery plan being accelerated via orders from General Ledbetter, Deaton and A Company secured the roof and upper floors of the building that the target was located in. The operation was a success, though Deaton soon found himself fighting against the zerg on the planet.