A new Captain America: Brave New World theory suggests President Ross becomes Red Hulk thanks to Extremis, a forgotten MCU substance! Find out how this links to Iron Man 3 and the Gamma Bomb.
Playing Samuel Sterns (AKA The Leader), Tim Blake Nelson offers a special first view of what the villain has been up to over sixteen years in the MCU. He said the Marvel crew has created a gripping narrative that clarifies his comeback motivation.