Back in May, we reported that Oscar-winning actress Tilda Swinton is in talks to play The Ancient One in Marvel's Phase Three adventure Doctor Strange, but it was never confirmed if she finalized her deal or not. While doing press for her summer comedy Trainwreck, in theaters this weekend, the actress confirmed that it's a done deal. Here's what she had to say, in an interview with Screen Crush.

"No no no, it's done. We're so far in talks that we're not talking any more [laughs]. It's done. The conversation has been had."

Over the last few years, Marvel has managed to land Oscar winners and cinematic legends such as Robert Redford (Captain America: The Winter Soldier) and Glenn Close (Guardians of the Galaxy) to star in their blockbusters, with Tilda Swinton following in that tradition. The actress has previously starred in comic book movies such as Constantine and last year's Snowpiercer, but this will be her first Marvel movie. When asked if there was something specific about Doctor Strange that intrigued her, the actress had this to say.

"Well, there's no particular interest in getting into something bigger, or even smaller, I just really liked the premise of this and the idea of playing this character. I'm a Marvel fan and I think this particular world that Doctor Strange goes into is really, really, really exciting. I'm really interested as both an actor and a fan to see what's done in this particular world. It's all about creativity. It's not about everything exploding at the end. It's about something very different. The idea of playing The Ancient One is really just too tickling. I can't say no to that!"

In the comics, The Ancient One is typically portrayed as a male Tibetan monk who becomes Stephen Strange's (Benedict Cumberbatch) mentor, as he starts his path to becoming the Sorcerer Supreme. The studio was previously searching for male actors, but decided on Tilda Swinton, after re-thinking the role. The actress added that she isn't sure how her version of the character will be different than previous incarnations, but she did add that she was never worried about Marvel's typical practice of locking actors down to multiple-movie contracts.

Related: Doctor Strange 2 Brings Back Original Director Scott Derrickson

"It's like a family thing. Who knows where one might pop up. I don't know where they'll use me and I don't know that they know, necessarily, even though they seem to know what they're doing for the next decade. I think it's like holding on to the tail of a galloping horse at this point. I'm up for it completely. I'm not prepared at all to be bored by this. I'm really looking forward to it."

Scott Derrickson (Deliver Us from Evil) is directing Doctor Strange from a screenplay by Jon Spaihts (Prometheus), with Kevin Feige producing. Chiwetel Ejiofor was recently confirmed as Baron Mordo in the superhero movie. Are you excited to see Tilda Swinton play The Ancient One?