8. The Leader

This guy’s a little bit different to the other characters we’ve discussed so far, because Samuel Sterns hasn’t actually even become the Leader yet – at least not in the movies.

He was the scientist played by Tim Blake Nelson who attempted to help out Bruce Banner in 2008’s The Incredible Hulk – and we’ve been waiting for him to return as the bad guy he is in the comic books ever since!

He did reappear in The Avengers Prelude: Fury’s Big Week – the prequel comic to 2012’s The Avengers – where it was revealed he had mutated into the telepathic, large-headed villain and was taken into S.H.I.E.L.D. custody, but exactly how canon those comics are is certainly open to debate.

Regardless of what his current situation is as far as the movies go, he’d be a very useful recruit to any villainous team!

He’s a genius in various fields, as well as a powerful telepath with the ability to read and control the minds of others, create mental illusions and wipe memories – which would be a very handy set of tools in the Marvel Cinematic Universe, given the lack of telepathic powers on the heroic side currently.

We’d love to have him back in the MCU!