Given that Marvel Studios and 20th Century Fox share partial rights to the Scarlet Witch and Quicksilver, and only the latter company can acknowledge the characters' true mutant heritage, Marvel have to go another route for the superhero twins' roles in The Avengers: Age of Ultron. While we may learn of that route by the end of Captain America: The Winter Soldier, Kevin Feige was asked by The Huffington Post yesterday if the Inhumans will be used as a leeway.
"Well, Inhumans is something that we are definitely thinking about and we think there's great potential there for a great movie," he said. "But, no, no -- we have not linked those two." Asked to clarify that the Inhumans have nothing to do with Marvel Studios getting around Mutants, he said "As it relates to Scarlet Witch and Quicksilver? No. No, no, no." Judging by Feige's latter comment, it could just be the Maximoffs (played by Elizabeth Olsen and Aaron Taylor-Johnson) that will not be considered Inhumans, however, there are additional superpowered characters rumored.