Hello!

My name is Mitchell Slier
I am a Coach and Fighter at Mejiro Gym Bali.

Book a private training session with me or send me a message if you have a specific question for me that you can't find in our FAQ
Mejiro Bali Coach Mitchell
A little bit about Mitchell
Nickname : Coach, Sensei, Mitch
Fluent in : Dutch, English, Indonesian, Balinese
As a young, energetic boy with a passion for sports, I was enrolled in Kyokushin Karate at the age of 5 to learn self-defense. While my childhood dream was to become a professional football player, I earned my green belt in karate before the dojo closed.

The forced transition to a new dojo, where I had to start from scratch, taught me valuable lessons about patience and perseverance. Around the age of 11, I began training in kickboxing at my father's gym.

Ultimately, I decided to focus solely on kickboxing and pursue a career in martial arts. My early experiences as a karate student have shaped me into the coach I am today.
Focusing on Dutch-Kickboxing
At the age of 15, a serious football injury sidelined me from the team. This setback was heartbreaking, as I had always dreamed of playing professional football. Realizing that team sports weren't my calling, I made the difficult decision to abandon my childhood dream and dedicate myself fully to kickboxing.

As I delved deeper into kickboxing, I discovered its positive impact on my physical and mental well-being. It was the right choice for me.

Around the time Mejiro Gym was opening in Bali, I had the opportunity to learn from Sensei Frans Visser, a seasoned Mejiro Gym veteran. He introduced me to the elegance and effectiveness of Dutch-style kickboxing.

A year later, I attended a seminar led by Sensei Andre Mannaart and K-1 champion Roel Mannaart. Their coaching and expertise inspired me to train with even greater intensity.


Coach Michel, Mitchell and Daniel with Daniel, in a boxing ring after a win
Fighter for Team Mejiro Bali
On the 1st of September 2020, Mejiro Gym Bali officially opened to the public. I was entrusted the responsibility to instruct classes at Mejiro Bali, which I gladly accepted because through this opportunity, I was able to share my passion for the sport with like-minded people and learn to improve myself everyday in the process. Learning Kickboxing is training me of the real meaning of discipline, hard work and applying in real life the 'not giving up' mentality to survive and keep on pushing forward.

On the 27th of  November 2021, I had my debut fight match, I was 17 years old and my opponent was 24 years old with a record of 12 fights 9 wins 2 losses. I felt confident with my skills and mental control so the difference in experience and age only encouraged me more. Despite that, I felt anxious before the fight but it all went away when I stepped out of the locker room. The fight was in pro rules (no headguard, no shin guard). I won’t spoil what happened, if you're curious, visit a record of the match on YouTube.

Come to the gym and train together with me or stay tuned for more of my fights for Team Mejiro Bali!
A Sneak Peek of my Mejiro Bali Team

Q&A

Questions-and-Answers with coach Mitchell

In Bali, what other activities can I do to improve my performance outside the gym and enjoy Bali at the same time?

You can swim in many beautiful beaches in Bali, I like to visit Jimbaran beaches, Uluwatu & Nusa Dua. Swimming in the waterpark, Bali waterbom for some thrill seeking and sun is also nice.

Do you have a favourite food in Bali, to take before training or unwind after training?

My go to food after training is either Tuna Steak or Italian food in forketta Sanur, especially their tiramisu for cheat day dessert.

Can I specifically book a private session with you? 

Yes you can request a private session with me, simply book a session and write in the details which coach you would like to train with, but keep in mind that the coach might not be available at the time / day that you requested and your booking will be rescheduled.

Having been raised into Kickboxing in a Boxing gym, do you still get nervous in the ring?

No, I rarely get nervous rather it feels like home. If it is your first time in the ring you should try being comfortable at first and make the ring your playground, maneuvering the ring comes with time and practice. Don’t fear the ropes or worry about being cornered, only regular sparring practice can ease your worry.

Do you have a fighter that you admire and inspire the most?

Yes infact I take a few styles from each fighter that inspires me to make my own style. Boxers that I look up to the most; Mike Tyson aggressiveness (his killing aura / mindset), Gervonta Davis (timing power), Floyd Mayweather's tight defence, Canelo's signature head movements, the style of 'The Diamond' Ramon Dekkers for Muay Thai, aggressive combos from Ghokan Saki, lowkicks from Rob Kaman and Ernesto Hoost.

With all the regular sparring and extensive training, what was your worst accidents / injuries?

Nothing too bad just the occasional black eye bruising from not defending properly, quite often from a kick to the balls (to all the men, wear groin guard) and I hurt my wrist once because I didn’t make a good fist.

Come for a
Drop-In

Opening Hours
Monday
: 08:00 am – 08:00 pm
Tuesday
: 08:00 am – 08:00 pm
Wednesday
: 08:00 am – 08:00 pm
Thursday
: 08:00 am – 08:00 pm
Friday
: 08:00 am – 08:00pm
Saturday
: 08:00 am – 01:00 pm
Sunday
: Closed
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