But long before these actors took on the roles of Iron Man and Black Widow on screen, the characters graced the pages of Marvel Comics. Here's a look back at all their first appearances.

Explore the full lineup of Lego Marvel Avengers Endgame sets, bringing the epic battles and iconic moments of the PG-13 blockbuster film to life in brick form. This detailed compilation showcases ...

One of the coolest features of the Avengers: Endgame Final Battle LEGO Set is all the top-tier LEGO Marvel minifigures that come within the package. It's a who's who collection of iconic characters.

Marvel was also growing enough to overshadow itself; a year later, Captain America: Civil War positioned itself as a de facto Avengers sequel, and made nearly as much as Age of Ultron in the process.