History
Our Story
From a modest group of 10-15 ladies, Champions Gym has blossomed into Western Australia’s most diverse community, boasting 3 clubs, 26 dedicated staff, and nearly 1000 members. In a decade, our transformative coaching, leadership, and inclusive ethos have empowered thousands. With over 14 championships, including state, national and world championships, our impact is undeniable. Each day we aim to Build Better People. Our mission, is simple: Reignite passion for health and fitness through dynamic martial arts.
Meet the team
Pamorn Martdee
Pamorn is a lifelong martial artist, coach, and founder of Champions Gym in Perth. With roots in Muay Thai going back to his childhood, Pamorn has spent years competing, coaching, and building a community that’s about more than just fitness — it’s about discipline, confidence, and becoming the best version of yourself.
Through Champions Gym, he’s helped thousands of everyday people step out of their comfort zones and into a stronger, more powerful version of themselves. Whether it’s someone walking into their first class or a fighter preparing for the ring, Pamorn brings the same energy: honest, focused, and driven by purpose.
He’s big on fundamentals, consistency, and doing the work — in training and in life. For Pamorn, martial arts isn’t just a sport; it’s living a powerful life.
His mission is simple: use fight sports as a tool to Build Better People.
Whitney Tuna
Whitney Tuna is a two-time Muay Thai state champion, mother of two, and co-founder of Champions Gym. With a professional background in Human Resources and a decade in martial arts, Whitney brings a unique mix of structure, empathy, and grit to everything she does.
She’s known for creating an environment where everyday people — especially women — feel supported to train hard, build confidence, and push beyond what they thought possible. Whitney’s passion lies in helping women feel strong, seen, and capable, whether they’re hitting pads for the first time or chasing big goals.
Balancing her roles as a coach, business owner, and mum, she understands the real-life challenges many clients face — and leads with a coaching style that’s practical, direct, and deeply people-focused. Her impact is felt well beyond the gym floor, helping shape a culture of resilience, growth, and self-belief at Champions Gym.
Loma AKA Detnarong
Coach Loma, also known as Detnarong Sitjaboon (เดชณรงค์ ศิษย์จ่าบูรณ์) started his fighting career at 7-years old, and is regarded as a national treasure. Amassing an impressive 500 fights, he is a four-time world champion winning 2x Lumpinee, Rajdamnern Stadium and Thailand Championships respectively. Today, he thrives in the gym, bringing an infectious smile, hunger to better his students, a drive to share his experience and passion for the fighting arts passing on the gifts that helped him succeed.
Coach Loma is a visiting coach from Yodyut Muay Thai in Koh Samui.
Emma Mallia
What started as a quest to reinvigorate herself and get fit again, Emma started as a member with us back in 2022. Falling in love with the ethos, coaching, and community, Emma decided to help around the club where possible, before taking up coaching to help fast-track development, especially among female members.
Today, Emma is a Club Manager leading a powerful team, also competing in Muay Thai with an aggressive, walk-forward style.
Emma has a keen eye for building strong bonds within the community and bringing people together.
Rikki Vallance
Born and raised in Scotland, Rikki found himself in the gym as a teenager. After getting into trouble and having too much energy, he was introduced to Muay Thai. Finding a passion for challenging himself, Rikki then found himself competing, and after seven years, fell in love with coaching, becoming certified in fitness, leading group and personal fitness classes. Rikki is quietly spoken but is passionate about bringing out the best in whoever he works with. Rikki is our Joondalup club manager and brings a wealth of knowledge and experience to our members.
Eddy D'va
Eddy is a passionate Muay Thai and Strength & Conditioning coach with a decorated background in competitive fighting and athlete development. A former WMC Muay Thai State Champion, he has fought — and beaten — some of the best fighters in Australia, earning a reputation for his sharp technique, fight IQ, and composure under pressure. His career includes appearances on Australia’s premier promotions such as Rebellion Muaythai, Muay Thai Grand Prix, and Origins Fight Promotions.
Eddy now channels that experience into his coaching, stepping in to the world of boxing. Eddy delivers personalised training for everyday clients and up-and-coming fighters alike. Whether it’s refining striking skills, building functional strength, or preparing for competition, his approach is grounded in real-world experience and a focus on long-term growth.
Known for his calm energy, technical eye, and commitment to his clients, Eddy is a respected leader in the community.
What you can expect on your first visit
Our team recognise that starting something new can be super-daunting. We still remember our first session like it was yesterday, so we know better than anyone how scary it can be. Our job is to relieve any, and all uncertainty, break down the barriers, and make it as easy as it can be when it comes to making the start. The first step is always the hardest…

We’ll help you find a program that fits your goals & your lifestyle.
Talk to a coach to learn more about which program could benefit you and your goals.