Mad Jim Jaspers

Here is an interesting mutant that could present a threat to the entire Marvel Cinematic Universe "“ especially in this post-Accords universe. In the comics, Mad Jim Jaspers is a mutant hiding his powers and working in the Parliament. What is interesting is that he pushes an anti-superhuman agenda. So, so to speak, he is a general Ross taken to the extreme.

However, he does that in order to become the strongest on the planet.

There is another twist, since using his reality-warping powers makes him insane "“ hence the name Mad Jim Jaspers. And when he truly becomes mad, he also becomes a universal threat. So he'd be more powerful than the strongest Avengers (and, for that matter, even more powerful than Star-Lord). The only way he could have been defeated was destroying the continuity he lived in "“ basically, he was a multiversal threat.

And if the MCU is indeed going to move away from the Phases system and expand in the universe and throughout dimensions, Mad Jim Jaspers would be an awesome one-time villain.