Early in “The Falcon and the Winter Soldier,” Sam Wilson gives Captain America’s shield to the U.S. government, with the intention of it being put in a museum to honor Steve Rogers. However, the government has other plans, as seen when they introduce their own new Captain America: John Walker (Wyatt Russell). While he seems like your average all-American man, audiences can instantly see the differences between him and Rogers. John is quick to react in rage while Steve was always calm, cool, and collected; Steve always tried to do what was right, while John just does what is convenient.
In the comics, Walker is an enemy of Captain America, the other side of the coin — a patriotic villain. And while the MCU series hasn’t taken him to those depths quite yet, it’s easy to see that he’s on a journey toward becoming his comic book character, the U.S Agent. He’s even got the costume to match. Like in “The Falcon and the Winter Soldier,” The U.S Agent is depicted in the comics as wearing Captain America-like colors, but darker. His chest outlines the American flag with simple red lines, with a black star on one side and red gloves. His costume is also more tactical than that of Captain America, driving home the fact that while Steve inspired hope, the U.S Agent inspires violence. Hopefully, we’ll see more of both John Walker and his costume as his character develops.