Marvel Studios is steadily building toward the X-Men’s long-awaited debut in the MCU, but Captain America: Brave New World may have already made one of the original members impossible to adapt.

Captain America's costume evolved through different eras, reflecting the changing times and roles. Alternate versions like Soldier Supreme and Captain Carter put unique spins on the classic design.

Captain America: Brave New World is light on cameos but there is a deep-cut nod to the comic books that brings one of the lamest, weirdest Avengers into the MCU. In the movie, Sam Wilson turns ...