In the DCU, Arsenal is Roy Harper, THFKA Speedy. He is currently a member of The Titans. Has uncanny aim and has mastered the art of Moo Gi Gong(although the DCU folks spell it Gon). This martial art, whose name means "Weapon Power" is one of the four "power divisions" or paths of study included in Hwa Rang Do. This division focuses on the offensive and defensive use of the 108 traditional weapons. As a result, Arsenal is able to use any hand-held object as a weapon.

His general lack of responsibility and eye for the ladies are held in check only by his concern for his daughter, Lian. Sadly, Lian's mother is the assasin Cheshire. He has learned that he is a descendant of Vandal Savage.