As with almost every sequel out there, new characters are introduced into the film to keep the franchise fresh and interesting. A few months back, Joss Whedon announced that The Avengers: Age of Ultron would add two new characters, Quicksilver and the Scarlet Witch, a brother and sister team that has yet to be cast.

Aaron Taylor-Johnson has been rumored to be the new Quicksilver, and has been talking about the character during press junkets for Kick-Ass 2, while Saoirse Ronan was attached to be the Scarlet Witch. But now that she has officially passed on the role, Marvel is quickly turning its attention to Martha Marcy May Marlene star Elizabeth Olsen.

Marvel Studios is rumored to be courting Aaron Taylor-Johnson (Kick-Ass, Anna Karenina) for the role of Quicksilver in Joss Whedon‘s tentatively titled The Avengers 2.

Taylor-Johnson, who reprises the title role in Kick-Ass 2: Balls To The Wall, most recently starred in Oliver Stone’s Savages as well as Joe Wright’s adaptation of Anna Karenina.

There’s no confirmation that Taylor-Johnson has landed the role, but we’ll known soon enough as it’s likely the roles of Quicksilver and his sister, Scarlet Witch, will be filled out in time for a big announcement at San Diego Comic-Con in July.

The Avengers 2 writer-director Joss Whedon revealed a few weeks ago that the classic Marvel characters Quicksilver and Scarlet Witch – the rights to whom are shared by both Marvel Studios and 20th Century Fox with conditions – would figure heavily in the highly anticipated sequel. One of many lingering questions now is: Who will be playing those particular roles?

The script is nearing completion, but no actors have met with Whedon or the producers as yet to discuss joining the cast. Of course now that hardly means that certain actors cannot be at least thought of for these integral roles, and if the rumor going around proves to be accurate, Irish actress Saoirse Ronan is at the top of Marvel’s list to play the Scarlet Witch.

While attending the Hollywood red carpet premiere of Iron Man 3, Yahoo Movies caught up with Joss Whedon, writer-director of Marvel’s The Avengers to discuss the status of the highly anticipated 2015 sequel.

In the video, which you can see below, Whedon confirmed that he recently finished a first draft of the script for The Avengers 2, and that “we’re in a really good place.”

And then, Whedon dropped this little bit of info…

In November, Marvel Comics will finally tell us just how siblings Wanda Maximoff (Scarlet Witch) and Pietro Maximoff (Quicksilver) went from mutant terrorists to members of the world’s greatest super hero team with the release of Avengers Origins: Scarlet Witch & Quicksilver!

The all-new story is being penned by Sean McKeever with art from Mirco Pierfederici. Check out the preview here below.