First Steps and Thunderbolts*' post-credits scene may hide a hint at Doctor Doom's secret hero twist in Avengers: Doomsday.

Ultimate Spider-Man has already faced plenty of threats with the Sinister Six, but Gwen Stacy might be the most dangerous of all.

Sure, you might think you know everything there is to know about the Marvel Cinematic Universe (MCU), but these are some of ...