Each year on April 28th, National Superhero Day honors superheroes, both real and fictional. Batman, Superman, Captain ...

Spider-Man has had one-on-one crossovers with Superman and Batman, while the Dark Knight has crossed over with Spidey, the Punisher, Daredevil, Captain America, and the Incredible Hulk.

Doomsday on Instagram, which opens with Doctor Doom entering through a portal. Doom is greeted by Spider-Man, Wolverine, and Hulk, who have all been members of the Avengers and the Fantastic Four. The ...