The Fantastic Four: First Steps game-changing mid-credits scene, explained

The Fantastic Four: First Steps features what might be the most important MCU mid-credits scene since Thanos first appeared in The Avengers.

Not only does it introduce one of Marvel's most iconic antagonists, it also teases why the Fantastic Four might have jumped to the main MCU universe, as seen in the Thunderbolts* end-credits scene. Let's break it down.

SEE ALSO: 'The Fantastic Four: First Steps' end-credits scene, explained

The Fantastic Four...