5) The Punisher
It’s starting to become clear that Marvel has no intention of bringing any of Netflix’s Defenders to the big screen, and with the clashing production schedules of Daredevil and Captain America: Civil War, this one would have always been hard to make happen.
Regardless, it was in theĀ Civil War comic book series that a mysterious masked figure is spotted keeping an eye on Team Cap on a number of occasions, and it’s only when he steps in to save a fleeing Spider-Man from the Thunderbolts that we learn it’s The Punisher.
Steve reluctantly allows him to join his group of Avengers, but when Frank guns down a couple of crooks Cap has recruited, the patriotic hero kicks him out in a surprisingly brutal fashion.