First Steps. It’s the film that finally introduces theiconic team to the MCU (even if they aren’t on the right Earth just yet). It’s a film that’s striving todo big box office numbers in a very crowded summer movie season and coming off the heels oftwo underperforming Marvel movies.

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

Here's who that mysterious figure was in the credits scene of "The Fantastic Four: First Steps" and how it sets up Doomsday.