Captain America ... of all, they're normal American citizens, making them very different from the Red Skull. Marvel's biggest villains are just as important as the heroes, and the comics simply ...

Justin Hammer could come back seeking revenge as a key villain in Captain America ... After all, in the comics, Sidewinder is ...

Credit: Marvel Studios The Leader was the big villain of Captain America ... hit comic Immortal Hulk. The Leader was one of the MCU's most long-awaited villains, having been seeded all the ...