Created as a human clone of the bounty hunter Jango Fett, the Clone X trooper once served in the Galactic Republic's Army as a clone trooper during the Clone Wars against the Confederacy of Independent Systems. During the skirmish on Wayland, as the trooper turned the corner, blaster raised, they were shot multiple times by Vik, killing them.
The Clone X trooper wore armor similar to the ones worn by other members of CX squad. Although this trooper had goggles on his helmet and used a double-barreled blaster pistol.