John Walker's character poster for season one.
Walker being presented as the new Captain America.
Walker helping Falcon and Bucky fight the Flag Smashers.
Walker warns Sam and Bucky to stay out of his way.
Walker obtaining the last of the super soldier serum.
Walker realizes that Lemar died from his injuries.
An enraged Walker lifts the shield, preparing to kill Nico.
Walker wielding the bloodied shield, seeing that everyone watched him kill Nico.
A broken Walker mourning Lemar's death.
Walker confronted by Sam and Bucky for his actions.
Walker during his breakdown, declaring he is Captain America to Falcon.
A defeated Walker, losing the shield.
Walker building his own shield from his medals.
Walker as the U.S. Agent.
Behind the scenes shot of Wyatt Russell as John Walker.