But this means that Captain America: Brave New World is the first-ever MCU movie not to open with the now-iconic Marvel ...

The hero was first introduced in Black Panther: Wakanda Forever (AKA one of the best Marvel movies ever made ... everything comes to a head in the Loki season 2 finale when the God of Mischief ...

If this sounds like a lot, we don't blame you as there's a lot to keep up from 17 years of Marvel storytelling ... and meets Natasha Romanoff, aka Black Widow, and her SHIELD boss Nick Fury.