CT-7567 (nicknamed “Rex”) was a Clone Captain who was in command of the 501st Clone Battalion of the Grand Army of the Republic. At some point after the war, Rex was retired from service like all other clones and resided in an old AT-TE with fellow retirees Wolffe and Gregor. Eventually, he fought with Ahsoka again against the oppressive reign of the Galactic Empire.

This costume would fall primarily under the Clones of the Republic detachment, and secondarily under Galactic Strategic Command.