What we know about Avengers: Doomsday is limited, but fans are hyped to see mutants back on the big screen. A rumor from Cosmic Circus claims that the X-Men will be wearing brightly colored costumes, which are more accurate to the comics and cartoons. Scooper Alex Perez writes:

We have a rumoured list of actors who will return in Avengers: Doomsday next December, along with details on the costumes that the X-Men will don when they cross paths with Earth's Mightiest

Marvel Studios ‘ Avengers: Doomsday is set to feature the long-awaited returns of several fan-favorite characters, including Chris Evans ‘ Steve Rogers and Hayley Atwell ‘s Peggy Carter. While their involvement remains unconfirmed by Marvel, a new rumor has revealed how Evans and Atwell will factor into the crossover movie’s story.