CT-5421 later ARC Lieutenant 5421, ARC Captain 5421, but later reverted back to CS-5421, and nicknamed "Clasher", was a clone trooper serving within the ranks of the Grand Army during the three year conflict known as the Clone Wars. Serving in the elite 422nd Defense Corps, Clasher saw ample amounts of action, being well experienced in combat. As a result, he became a veteran from many battles and campaigns.