In The Flash episode “Back to Normal,” super-strong, meta-human Griffin Grey makes an appearance. When he sees Harry he mistakes him for Earth-1 Harrison Wells, and kidnaps him. Griffin Grey then demands that Wells cure him from his current condition. Barry asks Jesse to help him track Griffin down.
Griffin Grey is portrayed by Haig Sutherland. The Canadian-born actor is known for his roles on Detective McLean (Mitchell Perkins), The Tomorrow People (Jonah), Supernatural (Lance Jacobsen), and SGU Stargate Universe (Sgt. Hunter Riley), among others. Sutherland is also recognized for his roles in the horror films Slither, Halloween: Resurrection, and Valentine. The Flash airs Tuesdays at 8pm on CW.