Elizabeth Olsen has joined the cast of the "Avengers".

According to MTV, the actress made her first comments to the media about her role as Scarlet Witch, also known as Wanda Maximoff, in "Avengers: Age of Ultron," while promoting her movie "Oldboy," a dark psychological thriller that is a remake of the 2003 South Korean film of the same name.

"I'm feeling really excited about Scarlet Witch because she's really complicated," she said. "It's really fun stuff. I'm kind of tired of playing myself right now, like, versions of myself. Doing something like [Scarlet Witch] sounds a lot cooler."

Aaron Taylor-Johnson, who co-stars with Olsen in the 2014 "Godzilla" movie, confirmed in an October 2013 interview with Total Film that he'd be playing the role of Quicksilver, Scarlet Witch's brother, in "Avengers: Age of Ultron." 

"It's funny. We are going from husband and wife [in 'Godzilla'] to twin brother and sister ['Avengers: Age of Ultron']," Olsen said. "I'm excited to actually get to work with him, because we didn't work with each other much in 'Godzilla.' I'm excited. I've been doing homework and reading comic books as my homework right now."

Olsen has starred in mostly independent movies. Olsen's movies released in 2013 are "Kill Your Darlings" and "Oldboy," which opens in the U.S. and Canada on Nov. 27. Her independent movies "Very Good Girls" and "In Secret" premiered at film festivals in 2013, but do not have release dates yet.

Olsen also mentioned her soon-to-be director, Joss Whedon, who she was quick to compliment.

"He's very smart. He's too smart. He might be too smart," she said. "Some people are too smart for their own good, but he's amazing."

Marvel Studios revealed at Comic-Con International in San Diego that the second "Avengers" movie is underworks. The cast members of the original "Avengers" movie are expected to return, including Robert Downey Jr. as Iron Man, Scarlett Johansson as Black Widow, Mark Ruffalo as The Hulk, Chris Hemsworth as Thor, Samuel L. Jackson as Nick Fury, Jeremy Renner as Hawkeye and Chris Evans as Captain America. 

"The Avengers" was the highest-grossing movie of 2012. The movie sold $623 million in tickets in the U.S. and Canada and a total of $1.5 billion in tickets worldwide.

Filming of "Avengers: Age of Ultron" begins in early 2014. The movie is scheduled for release on May 1, 2015.