Rogue

This might be an unusual choice, but Rogue was one of our favorite characters, especially since she debuted X-Men animated series of the "˜90's. Given her main ability, which was a curse rather than a gift, she has always been a tragic character. However, her other abilities made her also one of the most powerful.

And of course Rogue appeared in Bryan Singer's movies "“ but she wasn't really anybody's favorite. And the rumor is that she will appear again, as soon as X-Men: Dark Phoenix arrives. However, what powers will she have? If she has just her death-touch, maybe she should at least be able to absorb the psyche (thus giving her an edge) of the victim as well.

In the comics, Rogue gains her other cool superpowers by coming in contact with Carol Danvers' Captain Marvel. And since Captain Marvel is set to make her solo debut in the MCU in 2019, who knows? Well, we already know that Rogue won't appear in this shared universe. But we can dream about that.