Action remains the dominant genre of blockbuster filmmaking, be it through the lens of big-budget superhero franchises or leaner fight-focused retro efforts that have quietly made a resurgence thanks to the surprise successes of movies like John Wick. There was a time when leading a gut-busting, no-holds-barred action franchise could make a star. Nowadays, the genre is more centered on big name properties than A-List actors, with the possible exception of Tom Cruise and his perennially successful Mission Impossible series. That may be changing with the likes of Keanu Reeves's career renaissance with John Wick, and now, Charlize Theron is continuing her move into modern day action heroine with Atomic Blonde.Directed by David Leitch, the stunt coordinator behind the John Wick franchise (soon to be directing the sequel to Deadpool), Atomic Blonde stars Theron as an MI6 agent in Berlin, just before the collapse of the wall, on a mission to find a list of double agents who are being smuggled into the West. After premiering to an enthusiastic response at South by Southwest this March, the film opened this week to mostly positive reviews and a respectable first week gross. While critics have differed on the film's strengths and weaknesses - the neon styling and '80s score have been well received, while the plotting has been considered a let-down - there's been near universal acclaim for Theron's performance. The actress has been celebrated for her full-throttle commitment to the part, including doing much of the stunt-work herself and signaling the birth of a new kind of on-screen heroine, something of a broodier and more cynical sister to Wonder Woman. Action films with women protagonists aren't new, but they are a decidedly rarer beast than their male counterparts. It's uncommon to see a film like this headlined by a major female star - an Academy Award winner, no less - that could signal a larger shift in the genre. Theron leads that charge and is well on her way to becoming one of our generation's defining action stars.Aeon Flux movie posterFor those of us who have followed Theron's career over the years, her shift into a major action heroine has been a surprise. After working as a model, Theron made her major debut in 2 Days in the Valley before moving onto a series of supporting roles in films such as The Devil's Advocate and The Astronaut's Wife, primarily in wife and girlfriend roles. Most of her work wasn't especially acclaimed, nor did it make much at the box office, but Theron became notable in the press as a striking sex symbol. She later admitted that assumptions about her acting abilities due to her beauty put many people off hiring her for more substantial roles. That changed when Patty Jenkins, the director of Wonder Woman, made her feature length debut with Monster, a biopic of the infamous serial killer Aileen Wuornos. The role changed Theron's life and career, bagging her the Oscar for Best Actress and drawing universally positive reviews for her transformative performance, wherein she gained weight and wore prosthetics to more fully fit Wuornos's appearance.Following that, Theron made her first jump into the action genre with Aeon Flux, an adaptation of the cult MTV sci-fi animation, directed by Karyn Kusama. Theron committed to the role by training hard and doing many of her own stunts, which resulted in a neck injury that left her hospitalized for five days, followed by six weeks of grueling physical therapy. Today, Aeon Flux isn't remembered with much fondness. Kusama expressed disappointment with the end result after the studio heavily re-edited the movie without her involvement, and it failed to make back its $65m budget. However, despite its abundance of flaws, there's much to enjoy in Aeon Flux, and Theron's performance is one of them. She has the dextrous physicality for the lead role and conveys a steely coolness throughout that's not unlike a Bond girl or even Bond himself.

Charlize Theron Vickers Prometheus

Despite her performance, Aeon Flux's failure still left a black mark of Theron's career, frequently compared to Halle Berry's post-Oscar slump with Catwoman, and so the actress didn't try another major action role for several years. Instead, she bounced between critically acclaimed indie dramas (picking up another Oscar nomination for North Country) and supporting roles in blockbusters like Hancock. 2012 was the year that changed, as Theron starred in both Ridley Scott's Prometheus and the fantasy drama Snow White and the Huntsman. Neither role offered a traditional action experience, but this became a turning point for Theron as she made her mark in highly visible mainstream roles where her star power could be readily established. She's easily the best thing in Snow White and the Huntsman, clearly having a ball chewing the scenery as the evil Queen, and her work in Prometheus is criminally underrated, partly because her character is so poorly treated (it's still baffling as to why Meredith Vickers wasn't the lead of the story).

standing in the canyon with black warpaint on her head

This pair of films paved the way, but it was a little movie called Mad Max: Fury Road that cemented Theron's inimitable appeal as an action leading star. As Furiosa, the real lead of the story, Theron is powerful but never loses her emotional core. It's a performance rooted in a sense of physicality that feels immensely controlled. In a less adept pair of hands, the character could have been a stock moody heroine but Theron keeps things interesting. She's stylish but not dainty; strong but deftly drawn, and distinctly female. Mad Max: Fury Road is a woman's story at its heart - a brutal escape from the patriarchy disguised as a diesel-punk chase movie. You can't take your eyes off Theron for any moment she's on screen. Once again, Theron committed to doing many of her own stunts, and it shows with incredible results. You just can't fake that kind of strength.

Following that success, she signed on to the wildly successful Fast and the Furious franchise for its 8th installment, helping to strengthen her action star clout. Now, with Atomic Blonde, Theron is one of a handful of women carving out a niche in that most masculine of genres in a manner that shows the girls can do it just as well as the boys, and often backwards in high heels. As Lorraine Broughton, the Dior clad agent who mixes sensuality with wince-inducing physical prowess, Theron has helped to create a very female hero. Like Gal Gadot in Wonder Woman, Theron moves like a dancer, agile and precise. She knows she can't do exactly what all the burly men she comes up against can, so she uses the environment around her to help with her fights. It's the full package of action icon stylish, strong, mysterious, sexually powerful, and undeniably the center of the story.

One of the criticisms levelled against Atomic Blonde is that it brings nothing new to the table. That overlooks how rare it is to see a story like this or indeed any kind of original action property led by a woman and defined by female strength. You could probably swap out Charlize Theron for the hot young male star of the day, but it wouldn't be as interesting or worthwhile. That would also overlook the unique presence Theron has on-screen in these roles as a 41 year old woman whose capabilities and appeal are never in question. That shouldn't feel as fresh and revolutionary as it does, but with such a dearth of women leading such stories in Hollywood right now, Charlize Theron cannot help but emerge as a unique force. There are enough Chrises to go around, and Keanu will always live to fight another day, but for now, it's Charlize who can stand proud as our great new cinematic hero. Next stop: Atomic Blonde 2, please?

NEXT: ATOMIC BLONDE 2 NEEDS TO HAPPEN BEFORE FURIOSA