In a recent interview, Joss Whedon reveals that 4 female superhero leads will be seen in the upcoming superhero flick, 'Avengers: Age of Ultron,' a.k.a. Avengers 2.

During an interview, Joss Whedon said that there will be 4 prominent leads in Age of Ultron. Fans who have been following the production are very much aware of the current female leads: Black Widow (played by Scarlett Johanson), Scarlet Witch (played by Elizabeth Olsen), and Maria Hill (played by Cobie Smulders).

A report by Moviepilot presented the possible choices for the fourth female lead, and fans are wondering which one will be included in the silver screen cut.

One good guess is Miss Marvel. Before, there have been rumors that Miss Marvel would join the movie, but rumors quickly dissipated just a month after they were first heard.

One after-credits scene from "Guardians of the Galaxy" shows an injured Kree soldier, and a young blonde figure could also be seen. This raises assumptions that a back story for Miss Marvel has been created.

Another guess is Claudia Kim's "mystery role." It has been reported that Joss Whedon personally flew to South Korea to handpick the actresses that will play roles in the next Avenger film, and Claudia Kim is one of these actresses.

It is still uncertain as to what role will Kim will play, aside from the press release that she will play Tony Stark's assistant. Whatever that role is, it could be the fourth prominent lead role that Whedon is talking about.