Our Team

Nicholas Edmond

Co-founder & Performance Director

Nicholas Edmond is the Founder of Stealth Performance Training and one of the most revered performance coaches for professional athletes, fitness enthusiasts, and individuals seeking to improve their condition in the world.

Edmond specializes in helping individuals become stronger, faster, more powerful, and better conditioned through customized training programs. By utilizing various methods and programs, he assists clients in achieving their fitness goals and maximizing their athletic potential. He works with a diverse range of individuals, including athletes, fitness enthusiasts, and everyday individuals seeking to improve their physical performance. By staying current with the latest trends and strategies in the field, he continually refines and enhances his approach to ensure optimal results for his clients.

John Hiltibran

Head Coach & Partner

As a certified fitness professional with a background in Kinesiology and specialized training in Precision Nutrition, I believe that growth begins where comfort ends. Inspired by the philosophy of the sojourner—one who is always moving forward—I help my clients embrace the mindset that fitness is not just a destination, but a lifelong journey of progress and self-discovery.

My coaching is rooted in the fundamentals of weightlifting, strength and conditioning, and performance training. As a former college basketball player, I bring an athlete’s mindset into every training session—focused, disciplined, and driven by purpose. That experience allows me to connect with athletes on a deeper level and push clients to tap into their full potential, whether they’re training for performance or personal growth.

Whether you’re new to the gym or looking to break through a plateau, my approach begins with mastering proper form and technique, then building from there with structured, individualized programming designed to move you toward your goals—one step at a time.

Marlee Untermeyer

Trainer & Community Impact Lead

My coaching philosophy is built on one simple idea: the same training principles that keep you pain-free are the ones that make you strong, athletic, and confident in your body.

I’ve worked with clients across the entire spectrum—from professional football players training for speed, power, and injury prevention, to elderly women focused on balance, stability, and maintaining independence. While those goals may seem worlds apart, the foundation is often the same.

Most people fall somewhere in between those extremes, and that’s where my coaching comes in. Whether your goal is aesthetics, pain management, or athletic performance, I help you train in a way that supports your body instead of breaking it down.

The things that keep you safe are the same things that get you strong. When you learn to move well, protect your joints, and train with intention, the result is a body that not only looks better, but feels and performs better too.

You bring the goal. I’ll help you get there.

NASM CPT, PES, with TRX specialties and a Precision Nutrition Level 1 (PN1) certification. She brings over 4 years of in-person coaching experience working with gen pop clients, youth athletes, elderly populations, and individuals with disabilities through both group and one-on-one training.

Torrey Hudspeth

Trainer & Head of Youth Development

Torrey graduated from Arizona State University with a degree in Exercise & Wellness, focusing on kinesiology and sports science. He is certified in FMS and Strength & Conditioning, bringing a science-backed approach to every session.

With 7 years of experience in a physical therapy clinic—spending 4 years as a technician and 3 as a performance coach—Torrey developed a unique ability to help individuals transition from rehab to full physical performance, always respecting their injury history. He also worked with Altis, where he prepared Olympic sprinters for the Tokyo Games, gaining firsthand experience in high-performance training. In addition, he has dedicated time to working with youth athletes, helping them develop their skills and confidence to prep for several different sports.

Specializing in injury prevention and speed development for all ages and abilities, Torrey is passionate about empowering and educating his athletes to overcome any physical challenge they may face. His expertise, combined with his genuine care for his clients, makes him an incredible addition to our team. We can’t wait for you to meet him and experience the impact he will have on our community!

Kevin Olson

Trainer

Kevin grew up in Spokane Washington and was a gymnast for 10 years before attending Washington State University where he graduated with a BS in Kinesiology. He then moved to Arizona in 2007 and attended A.T. Still University in 2009 graduating with a MS Human Movement. Throughout the past 9 years Kevin has had the opportunity to work with a wide variety of age and ability rages from the HS athlete to the 84 year old who might need a little stability work. He is passionate about helping people achieve a higher quality of life through fitness and nutrition and understands that there are many different definitions and paths that lead to this goal for each of his clients. He believes that teaching people to move the way the body was meant to move will result in a way of life that is more fulfilling and have great benefits for clients not just in the gym, but out in the real world as well.

Kevin’s Credentials

Jesus “G”

Stealth Storyteller & Media Coordinator

Born and raised in Phoenix, I’m a visual storyteller who puts God first and the lens second. Through photos and videos I capture the essence of grind, the heart of athletes, and the best of every shot. From pro athletes to local Arizona talent, I’m always looking for the story behind the action.

Full-time behind the lens for Stealth Performance. I am documenting the passion, the push, and the progress of every athlete and member that walks through the door. Whether it’s a breakout set or a quiet moment of focus, I capture the movement, the mentality, and the mission. Training transforms and I’m here to show it!

katrina kadyszewski

Stealth Team Mom / Operations Manager

Katrina—affectionately known around Stealth as the team mom—wears more hats than most people realize. She is a certified trainer who can still jump in and coach when needed, but her main role is helping keep the business running smoothly as our office manager. From billing and KPIs to keeping the team on task, Katrina is the steady presence behind the scenes who helps make sure nothing falls through the cracks.

She has been part of the Stealth community for years, and before the record boards came down, her name was on more than a few of them. Quiet strength, big numbers on the bar, and an unmatched level of reliability are a big part of who she is. Outside of the gym, Katrina has graduated with her master’s degree and is now working as a therapist. Her commitment to helping people runs deep, whether that is through her work in mental health, her volunteer efforts, or the way she shows up for our members and team every day.

Ben Novak

Co-Founder & Principal Partner

With over a decade of experience in coaching and gym ownership, Ben Novak brings a unique blend of leadership, vision, and hands-on expertise to Stealth Performance. As the founder and strategic director, Ben focuses on the big-picture development of the gym—ensuring systems, culture, and community are aligned for long-term success.

Growing up with obesity and struggling with his own health from a young age, Ben’s journey into fitness was personal from the start. That perspective helped shape a career dedicated to building programs that are both effective and sustainable. Over the years, he has coached everyone from weekend warriors to youth athletes and high-performers, always emphasizing long-term growth over quick fixes. While he now spends most of his time mentoring coaches and guiding the vision of Stealth, Ben still steps in on the training floor, where his passion for coaching and connection continues to shine through.