Who Is U.S. Agent? Marvel's Evil Captain America Replacement Explained

Chris Evans as Captain America and US Agent

The Falcon and the Winter Soldier will introduce a new version of Captain America to the Marvel Cinematic Universe: John Walker aka U.S. Agent - but who is he?. John Walker has a deep, complicated history with Steve Rogers, the Avengers, and other characters in the Marvel Universe, which makes him an interesting addition to Marvel's first Disney+ TV series.

At Disney's D23 Expo, it was confirmed that U.S. Agent is officially joining the MCU and will be played by Wyatt Russell. U.S. Agent will make his MCU debut in The Falcon and the Winter Soldier, which stars Anthony Mackie as Sam Wilson and Sebastian Stan as Bucky Barnes. The Falcon and the Winter Soldier will pit Captain America's hand-picked successor, Falcon, against a comic book accurate Baron Zemo, who hasn't appeared in the MCU since Captain America: Civil War. The series will also see the return of Emily VanCamp's Sharon Carter.

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Related: Falcon & Winter Soldier Better Not Make Sharon Carter A Love Interest

U.S. Agent has played multiple roles in Marvel Comics, which gives The Falcon and the Winter Soldier plenty of leeway when it comes to what purpose he'll serve in the series. John Walker has been a hero, an anti-hero, a villain, a foil to Captain America, a leader, and even an Avenger. Here's what you need to know about Marvel's evil Captain America, U.S. Agent.

U.S. Agent's Comic Book Origins

Created in the pages of Captain America in 1986 by Mark Gruenwald and Paul Neary, John Walker was inspired to join the military after his brother's death in the Vietnam War. Unfortunately for Walker, he never had the chance to see combat. After leaving the military, Walker looked for other ways to become a hero. Walker gained superhuman abilities by purchasing them from a scientist called the Power Broker. Afterward, he began his superhero career as the corporate-sponsored Super-Patriot.

When Steve Rogers made the decision to retire as Captain America, the United States government began looking for a replacement. Super-Patriot earned their attention after taking down a terrorist. Walker was subsequently given Captain America's costume and shield, along with a "Bucky" of his own. Motivated by what his new uniform represented, Walker tried to emulate Captain America, but went over the edge when he brutally attacked a pair of supervillains, Left-Winger and Right-Winger, to avenge the murder of his parents. Later, Red Skull engineered a confrontation between Walker and the original Captain America. After Walker's defeat, Steve resumed his role as Captain America.

This wasn't the end of Walker's story. He remerged sometime later, under the codename "U.S. Agent". As U.S. Agent, Walker became a government-appointed member of the West Coast Avengers, much to the chagrin of their leader, Hawkeye, who had no choice but to tolerate Walker's arrogant and unpleasant demeanor. Though U.S. Agent was disliked by many of his teammates, he proved to be a capable member of the team who aided them in many of their adventures.

Related: First Look At New Captain America Suit In Falcon & Winter Soldier

U.S. Agent Powers & Abilities Explained

Thanks to the Power Broker, U.S. Agent possesses superhuman strength, as well as enhanced speed and reflexes. U.S. Agent is capable of lifting 10 tons, which puts him above Captain America and in the same range as Spider-Man. Despite his impressive strength, U.S. Agent is considerably weaker than Marvel's strongest heroes, such as Thor and Hulk. Due to his durability, U.S. Agent is extremely difficult to bring down, a fact that both Captain America and Hawkeye can attest to, based on their encounters with him. To put it simply, Walker shares all the abilities of Steve Rogers, except his far outshine Steve's.

U.S. Agent is highly skilled in hand-to-hand combat, which, combined with his super strength, makes him an extremely dangerous opponent for almost any hero or villain. U.S. Agent also carries a vibranium shield, which he wields and throws in a way similar to how Captain America uses his own shield. Like Steve, U.S. Agent has mastered the use of shield, due in no small part to training he received from the villain and mercenary, Taskmaster.

John Walker Is Also The Villain Super-Patriot

U.S. Agent wasn't always a superhero. In his earliest appearances, Walker was an antagonist to Captain America. As Super-Patriot, Walker felt that Captain America wasn't the symbol the country needed, and chose to be something better. He traveled around to various rallies to boost his image as an American hero. He had three friends pretend to be supporters of Captain America, and staged a fight with them in an effort to gain the public's admiration. Super-Patriot took it a step by further, though, by sending his three underlings to beat up foreign exchange students. He tried to make it appear as if Captain America was responsible for the attack.

At a rally, Super-Patriot taunted Captain America until the two ended up fighting. Though he was more skilled than Walker, Super-Patriot's strength and durability greatly exceeded his own. Captain America was disappointed with himself when he realized how difficult it was to contend with someone as strong as Super-Patriot. Though Super-Patriot never actually won, Cap conceded defeat and left the scene, finally giving Super-Patriot the victory he craved so much.

Related: Every Marvel TV Series Coming To Disney+

Later on, when Washington D.C. was being threatened by a terrorist, Super-Patriot found his chance to prove himself as a hero. After stopping the terrorist, he gained the recognition he always wanted and became an instant celebrity. He even referred to himself as "America's future". His success in thwarting the terrorist attack is the reason why the U.S. government looked to him as their saving grace when a replacement for Captain America was needed.

The MCU's US Agent in The Falcon & The Winter Soldier

Falcon Versus US Agent

Actor Wyatt Russell, who is the son of Kurt Russell, will portray the MCU's John Walker in the Disney+ series, The Falcon and the Winter Soldier. Not much is known about his role in the show, or which identity he'll be using. It's possible that since the government may not want Falcon to be Captain America, Walker will be chosen as Captain America's official replacement. In regards to how U.S. Agent will look in the series, the show could make use of Avengers: Infinity War's U.S. Agent-inspired Captain America concept art.

Next: Every Marvel TV Series Coming To Disney+

Key Release Dates
  • Black Widow (2020) release date: May 01, 2020
  • Eternals (2020) release date: Nov 06, 2020
  • Shang-Chi and the Legend of the Ten Rings (2021) release date: Feb 12, 2021
  • Doctor Strange in the Multiverse of Madness (2021) release date: May 07, 2021
  • Thor: Love and Thunder (2021) release date: Nov 05, 2021
  • Black Panther 2 (2022) release date: May 06, 2022
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