First Steps, the Russo brothers have teased its connection to their much-awaited MCU movie, Avengers: Doomsday. The directing duo recently took to social media to share a promotional post for the first entry in Phase Six of the MCU,

First Steps was just about reboots and retro vibes, think again. With their First Family, Marvel is cracking open a cosmic door to something far bigger.

While the villain is set to terrorize the Marvel Cinematic Universe in next year's Avengers: Doomsday, he made his onscreen debut in the post-credits scene of The Fantastic Four: First Steps. But since he's only seen from behind holding out his mask,