Avengers: Infinity War looks set to be the biggest superhero movie of 2018 and possibly of all-time, so it's hardly a surprise that Marvel Studios is now making some major casting additions. The first of those may very well be Game of Thrones star Peter Dinklage as we learned just a couple of days ago that he will take on a "key role" in the Marvel Cinematic Universe in both Infinity War and The Avengers 4.



However, that leads us to wonder who on Earth (or in the cosmos) the award winning actor could be playing. A lot of you have already weighed in with your theories, but I have some ideas of my own!



Below, you'll find what I believe to be the six most likely characters Dinklage could end up playing in Avengers: Infinity War and beyond. Some may be familar to you, while others likely won't be, but don't expect to find a lot of obvious choices here as the actor really could be playing anyone in the MCU...

6. The Watcher