In case there was any doubt that writer/director Joss Whedon was referring to Quicksilver and the Scarlet Witch last week when he teased there's "a brother-sister act" in The Avengers 2, we now have confirmation.
According to Entertainment Weekly, an unnamed source states the twin children of Magneto will indeed join Earth's Mightiest Heroes in Marvel's 2015 sequel. When the question was posed to studio President Kevin Feige, he would only say, “I’m not confirming or denying. The draft could change six months from now.”
Of course, that does confirm Quicksilver and Scarlet Witch appear in Whedon's first take on the script, which the writer acknowledged is "an evolution, and that goes on in editing, it goes on all through shooting and it never stops. [...] You do come to a point where you all agree, OK ... I've got these two characters -- my two favorite characters from the comic book, a brother-sister act, they're in the movie, that's exciting -- you lock certain things in. But then, there's a certain fluidity ..."
Judging by Whedon's enthusiasm, it seems likely Quicksilver and Scarlet Witch will be among those things locked in throughout the development process.
While Fox owns the film rights to the X-Men franchise, Feige indicated in April 2012 that, presumably because of the characters' long histories with the Avengers -- they joined the team within a year of their introduction as X-Men villains -- Marvel could use Quicksilver and Scarlet Witch as well.
“It’s a little complicated,” he said, “but if they [Fox] want to use them in the X-Men movie they could, [but] if we want to use them in The Avengers movie, we could.”
The Avengers 2 opens May 1, 2015.