In the high-stakes world of Hollywood, the most iconic action sequences often rely on a seamless fusion of visual effects, expert choreography, and the physical prowess of stunt performers. While audiences are accustomed to seeing A-list stars take the credit for death-defying feats, the reality behind the curtain is often far more nuanced. No one embodies this shift in industry dynamics better than Devyn Dalton. A 4-foot-6-inch powerhouse with a resume that spans blockbuster hits like Hypnotic, The Electric State, and the Planet of the Apes franchise, Dalton has recently stepped into the global spotlight for a surprising reason: her arms.
During a recent appearance on the HappySadConfused podcast, Oscar-winning actor Matt Damon—the lead of the upcoming box office sensation The Odyssey—revealed that his character’s sculpted physique in key scenes and promotional materials was, in fact, the work of his stunt double. "My double was a woman, a female stunt performer," Damon told host Joshua Horowitz, before offering the ultimate compliment: "Who had the greatest arms I’ve ever seen."
A Career Built on Versatility and Movement
To understand how Dalton arrived at this moment, one must look at a career defined by its refusal to be categorized. Born with an innate drive to perform, Dalton’s journey began in the world of dance. This early immersion in physical expression laid the groundwork for her transition into the demanding field of stunt work and motion capture.
"Movement has honestly been part of my life for as long as I can remember," Dalton shared in an exclusive interview with M&F Hers. "I grew up dancing and performing, so I was active from a very young age, but my relationship with fitness evolved as my career did."
As her acting resume expanded to include motion capture—a medium that requires actors to inhabit non-human characters through specialized performance techniques—Dalton found a natural home in stunts. She describes the profession as a perfect intersection of her primary passions: acting, athleticism, storytelling, and complex problem-solving. At 4-foot-6, Dalton occupies a unique niche in the industry. Her stature allows her to double for children, supernatural creatures, and characters of varying scales, yet she brings the conditioning and professional discipline of an adult veteran to every set.
Chronology of a Hollywood Trailblazer
Dalton’s rise to prominence did not happen overnight; it was a decade-long evolution of skill and grit.
- 2011: The Breakthrough: Dalton made headlines as the first woman to portray Cornelia in Rise of the Planet of the Apes. Her ability to physically embody the ape’s movements, combined with her dedication to the role, set a high bar for motion capture performance. She also provided the toddler-aged movements for Caesar, the film’s central protagonist.
- 2017: Returning to the Apes: Dalton rejoined the franchise for War of the Planet of the Apes, further refining her craft as a young Cornelius. These films were, in her words, "incredibly formative," forcing her to study posture, weight distribution, and non-human behavior while performing on all fours for hours at a time.
- The Present Era: Having cemented her reputation as a top-tier motion capture artist, Dalton transitioned into high-profile stunt work for major studio productions like Hypnotic and The Electric State. Her current recognition for her role in The Odyssey marks the zenith of her visibility, shifting the public’s perception of what a stunt double looks like.
The Science of the "Greatest Arms"
The viral nature of Damon’s comments about Dalton’s arms has sparked a broader conversation about female strength in the stunt industry. For Dalton, the praise was both a professional honor and a validation of years of rigorous, self-motivated training.
"I woke up in New Zealand to my phone blowing up, because Matt Damon had apparently been talking about my arms," she recalled. "I’ve trained consistently for years, and I genuinely love being strong."
Dalton’s Training Methodology
When asked about the secrets behind her physique, Dalton emphasizes simplicity, consistency, and functional strength. Her routine is built around movements that can be performed anywhere, a necessity for a professional who travels frequently for film shoots.
- Bodyweight Mastery: Dalton prioritizes pull-ups, chin-ups, dips, and push-ups. These foundational movements build the lean, defined muscle mass that caught Damon’s eye.
- Boxing for Endurance: Incorporating boxing into her cardio routine serves a dual purpose: it builds explosive power and ensures the arm definition required for high-intensity stunt work.
- Cable Tension: In a traditional gym setting, Dalton favors cable machines. Unlike free weights, cables maintain constant tension throughout the entire range of motion, allowing her to sculpt muscles from multiple angles.
- The 2-Day Rule: For those looking to mirror her progress, Dalton suggests two dedicated upper-body sessions per week, separated by at least 48 hours of recovery. "You don’t have to destroy yourself in the gym every day," she advises. "Consistency, progressive overload, good nutrition, and recovery are what make the difference."
Implications: Changing the Gender Paradigm in Stunts
Dalton’s involvement in The Odyssey serves as a symbolic turning point in Hollywood. For decades, the industry standard was the practice of "gender-swapping" in reverse: men often performed stunts for female leads. Seeing a woman double for a male lead—and being celebrated for the physical strength required to do so—challenges the antiquated notion that stunt performers must match the gender of the actor they are doubling.
"Historically, we’ve seen men doubling women quite a lot in the stunt industry, so I love the fact that we’re now seeing women getting opportunities to double men too," Dalton says.
Beyond the technical logistics, there is a profound personal narrative to Dalton’s strength. Having survived a period of intense physical and mental domestic violence in her twenties, her commitment to fitness took on a new, deeper meaning. Martial arts, which she initially turned to for self-defense, became a pathway to mental resilience.
"Finding martial arts gave me a sense of strength, confidence, and self-defense that I believe every girl and woman deserves to have," she reflects. "It isn’t about living in fear; it’s about feeling capable, aware, and empowered in your own body."
Conclusion: A New Standard of Professionalism
The praise from Matt Damon is not just a lighthearted anecdote; it is a testament to the level of professionalism that stunt performers like Devyn Dalton bring to the industry. By blurring the lines between acting and physical performance, Dalton has created a blueprint for future performers.
As the industry moves toward more inclusive hiring practices and more authentic depictions of action, the work of performers like Dalton will only grow in importance. She has proven that at 4-foot-6, she is capable of standing taller than anyone else in the frame. Whether she is playing a chimpanzee, a child, or the stunt double for an A-list actor, Dalton remains a pioneer—armed with, as Damon put it, "the greatest arms" in the business, but more importantly, a heart and mind forged by years of dedication and an unyielding commitment to the craft of storytelling.
For those inspired by her journey, Dalton remains a beacon of what can be achieved through consistent, purposeful movement. Her story serves as a reminder that the strongest actors on screen are often the ones we are never meant to see—but whose influence is felt in every frame of the film.
