Adam Warlock
Adam Warlock is yet to appear in the Marvel Cinematic Universe, but his cocoon has been seen in both the mid-credits scene of 2013’s Thor: The Dark World and in 2014’s Guardians of the Galaxy movie – so we know he’s coming.
His first appearance will undoubtedly be in 2017’s Guardians of the Galaxy Vol. 2, when he will likely have emerged from his cocoon. We may well see him in possession of an Infinity Stone in that movie.
Warlock has possessed every single one of the Infinity Gems in the comic books – on occasion, he’s even had possession of the completed Infinity Gauntlet – so this would certainly be fitting for the character we already know. He’s an expert on their history and on how to use them, too – so he could very well teach the Guardians of the Galaxy every detail of what they’re all about.
The next entry in this list is a character strongly associated with Adam Warlock.
