John Walker was a US Army veteran who went through the Power Broker process to enhance his strength in hopes of honoring his fallen brother. He joined the Universal Class Wrestling Federation as Super-Patriot until he became convinced to put his skills to better use becoming a super hero. He was later chosen to take up the mantle of Captain America when Steve Rogers retired. Walker is a hardline Christian, right-wing conservative believing in country before anything else.[9] When Rogers returned, Walker re-established himself as U.S.Agent where he went on to serve as a member and even leader of various Avengers teams.
Current Version:
U.S. Agent
Former Versions:
Super Patriot
Captain America
U.S. Agent (Force Works)
U.S. Agent (Jury)
U.S. Agent (S.T.A.R.S.)
Captain America (New Invaders)
U.S. Agent (Omega Flight)
U.S. Agent (Mighty Avengers)
Warden John Walker (Raft Warden)
