13. Liam Hemsworth
Who he almost played: Chris’s younger brother was somewhat hilariously an alternative finalist for the role of Thor.
Who he could still play: Surprisingly, one of Thor's most important supporting heroes, his half-brother and fellow Asgardian warrior Balder, has never shown up in the MCU. With the scope of Ragnarok sure to affect the entire realm of Asgard, it could be the right time to introduce the young hero.
Hemsworth hasn’t proven much as an actor but bantering next to his brother as they fight side-by-side could be just the thing to bring out some talent from him. The family resemblance would be there, at the very least.