Roj was a male Human who held the rank of enlisted trooper. He served within the Alliance Military's 4th Squad, which was under the leadership of Corporal Jobin.
The squad to which Roj belonged was a component of the Rebel Alliance forces stationed at Echo Base on the icy planet of Hoth. Their designated location was Echo Station 5-7. In the course of the battle, an All Terrain Scout Transport and a contingent of snowtroopers launched an assault on the ion cannon. Jobin, along with Roj, Grond, Sora, and another Rebel soldier, engaged the snowtroopers in combat. The squad achieved the destruction of the All Terrain Scout Transport. Subsequently, along with the rest of his comrades, Roj participated in the assault on the ion cannon, successfully wresting control of it from the stormtroopers. During this engagement, however, both Grond and the unnamed rebel soldier suffered death.
Subsequently, Roj, Jobin, and Sora withdrew to Echo Base, seeking transportation away from the planet. However, they encountered Darth Vader. They retreated to a nearby hangar containing a Y-wing starfighter. As they boarded the vessel, Jobin sustained a gunshot wound. Roj expressed his desire to bring Jobin along, but Jobin urged him to flee, handing him a letter addressed to his mother. Roj and Sora successfully evaded the Empire's forces and returned to the Rebel fleet, where they delivered the letter to Crix Madine.