Doomsday's Doctor Doom hails from Earth-828, the reality inhabited by Marvel's First Family in The Fantastic Four: First Steps. Read on for

First Steps" has a thrilling ending that teases Dr. Doom and where the MCU goes from here in "Avengers: Doomsday."

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,