Nikolaj Coster-Waldau – Adam Warlock
Seeing Warlock’s cocoon in the Collector’s lair during Guardians of the Galaxy means that the character will probably be popping up in Guardians of the Galaxy 2 – or, if not then, at the very least during the Infinity War films. And given that the cocoon is a curio by this point, my guess is that the MCU’s Adam Warlock will have been cruising around the galaxies for some time before his big screen introduction.
As such, a slightly older actor who still has the Warlock look, like Game of Thrones star Nikolaj Coster-Waldau, seems to be the right way to go. And on that HBO fantasy hit, the actor has proven that he can face off physically or dramatically with just about any character and still come out on top. He could definitely give Warlock the mettle he needs.