About
A martial arts home in Sterling Heights.
Allegiance Gym opened in Sterling Heights, MI in 2015 as a Brazilian Jiu-Jitsu and martial arts academy, affiliated with Cascao Jiu Jitsu. Our jiu jitsu program runs under the Allegiance Cascao Jiu Jitsuname — lineage from Walter “Cascao” Vital through Victor Torres and Matheus Veloso De Brito to head instructor Chris Wisniewski. We teach BJJ, Muay Thai, MMA, and kids jiu jitsu — plus submission grappling, boxing, wrestling, and live sparring — to everyone from first-day beginners to competitive athletes.
Our philosophy
The Pain of Today is the Victory of Tomorrow.
Our primary focus and commitment is to improve the lives of our patrons through the training and discipline of martial arts.
That's not a marketing line — it's the reason the doors opened and the reason members keep showing up. Martial arts reshape how you handle pressure, how you treat the people next to you, and how you respond when things get hard. The mat is the classroom; the rest of life is the test.
Whether you're here to compete, to lose weight, to defend yourself, or just to learn something hard and do it well — you'll find a training partner and an instructor who takes your progress seriously.
The instructors
Who you'll train with.
Every instructor here has their own specialty, but they all share the same job: make sure you're still on the mat, still learning, six months from now.

Chris Wisniewski
Owner & Head Instructor
Chris is the founder of Allegiance Gym and its head Jiu Jitsu instructor. A black belt under Walter "Cascao" Vital via Victor Torres and Matheus Veloso De Brito, he started Allegiance in 2015 with a…
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Matheus Veloso de Brito
Owner & Head Instructor
Matheus Brito has been training Brazilian Jiu Jitsu since 1998 being a 3rd degree blackbelt under Walter Cascao. He has competed and achieved various awards throughout his career and is always trying…
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Ken Mertens
Jiu Jitsu Instructor
Blackbelt under Matheus Brito, Ken has been training in jiu jitsu for 10+ years. With multiple wins across all belt levels, he brings technical precision and an exceptional ability to teach, meeting…
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Michael Glenn
Jiu Jitsu Instructor
Michael Glenn is a dedicated and driven individual who brings strength, discipline, and integrity into everything he does. Known for his steady mindset and strong work ethic, Michael is someone who…
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Michael "The Monster" Johnson
MMA Instructor
Michael "The Monster" Johnson is a dedicated mixed martial artist with over 20 years of wrestling and grappling experience and more than a decade of fighting at a competitive level. Known for his…
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The network
Partner gyms across Michigan.
Academies we cross-train, compete, and share mat time with. If you're traveling — or looking for us outside Sterling Heights — these are the rooms we vouch for.
Book your first class — free.
Come in, meet a coach, and get on the mats. No contract, no pressure.
Get started
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