U.S. Agent (John Walker) Reading Order

Thanks to the MCU, U.S. Agent a.k.a. John Walker seems to be more relevant in 2026 than he may have ever been in the comics since his first appearance as the (second) supervillain Super-Patriot in Captain America #323 in 1986, a comic book by Mark Gruenwald and Paul Neary. Still, he had a notable role when Steve Rogers stepped down as Captain America; he took over the role and gradually transitioned into the brutal, shield-wielding anti-hero known as U.S.Agent.
John Walker is far more than just a “Dark Captain America.” Since his debut in 1986, he has served as a complex mirror to American idealism, a soldier who follows orders when Steve Rogers follows his conscience. Whether you discovered him through Wyatt Russell’s performance in the MCU or his long history as a mainstay of the West Coast Avengers, navigating his four-decade history can be as volatile as the character himself.
This guide breaks down every era of Walker’s career, from his corporate-sponsored beginnings and his polarizing stint as the Sentinel of Liberty to his modern redemption arcs.








