Avengers 5: 10 Possible Storylines It Would Be Awesome To See In The MCU
4. Ultron Unlimited
Elements of "Ultron Unlimited" were included in Avengers: Age of Ultron, but there's still a lot here that could be used in a fifth Avengers movie. The villainous android may have been destroyed by The Vision in Avengers: Age of Ultron, but there are still ways he could return, especially as the villain's demise wasn't technically shown on screen!
Regardless, the addition of characters like Jocasta and Wonder Man to the MCU would be fantastic, and with a huge part of this storyline revolving around taking Ultron from being a jilted creation to Hank Pym's evil reflection, there's a tonne of storytelling potential to explore here.
Ultron's MCU creator, Iron Man, is dead and gone, but he could easily try to replace his "father" as the world's greatest hero in a suitably twisted manner. Marvel Studios even has the option to use Ultron's return to set the stage for an adaptation of Annihilation, especially as he played a key role in that event when he travelled into outer space and decided to conquer the cosmos rather than Earth.
That means Avengers 5 could have ramifications for Earth's heroes and the Guardians of the Galaxy!