Become someone others can depend on.
Defense Factory is an Appleton, Wisconsin organization focused on personal protection, family safety, and Jiu-Jitsu. We help people build practical skills and thoughtful judgment, with training pathways for adults, kids, and teens. Our approach emphasizes awareness, avoidance, and responsible action.
Practical skills. Thoughtful judgment. People who depend on you.
People train for many reasons: to feel more capable, to help their children build confidence, or to better protect the people they love.
Defense Factory brings those motivations together through a family-centered approach to protection. Jiu-Jitsu provides our empty-hand foundation. Our broader mission includes awareness, communication, avoidance, physical capability, and responsibility for what happens afterward.
A Defender is someone others can depend on.
Our PRIMA™ framework brings judgment into the conversation: Proportionality, Responsibility, Immediacy, Minimal Necessity, and Avoidance. It asks whether action is needed now, whether a response fits the threat, whether that degree of force is necessary, what responsibilities follow, and whether the situation could reasonably be avoided or de-escalated.
Accessible
New to training? Contact us to find an appropriate starting point for you or your child.
Practical
Every concept and technique is chosen for real-world relevance — not sport competition or performance.
Respectful
The training environment is mature, focused, and built on mutual respect. Adults train with adults.
Progressive
Skills build on each other over time. You leave each class with something you can actually use.
Kent Maichle
Founder & Lead Instructor
Kent Maichle is the founder and lead instructor of Defense Factory, as well as a Gracie Black Belt, Certified Instructor, and owner of Gracie Jiu-Jitsu Appleton. He began martial-arts training in 2006 and holds a third-degree black belt in American Freestyle Karate, with additional experience in Krav Maga.
Kent completed the Gracie Instructor Certification Program in 2012 and opened Wisconsin's first Gracie Certified Training Center. Since then, he has helped hundreds of students build confidence, awareness, and real-world self-defense skills.
His work also extends beyond the academy. Kent has served as an Inspector and Judge for the State of Wisconsin since 2010, following the regulation of boxing and mixed martial arts. In 2016, he co-chaired a committee that helped establish unarmed-combat standards for the Wisconsin Department of Safety and Professional Services.
Kent's approach to self-protection emphasizes awareness, control, restraint, and responsible decision-making. The goal is not to win a fight — it is to recognize risk early, make sound choices under pressure, and find the safest path out of harm.
Credentials and background
Appleton, Wisconsin
Defense Factory is located at Gracie Jiu-Jitsu® Appleton, inside Northland Mall. Enter the mall and look for the Gracie Jiu-Jitsu® Appleton sign.
PRIMA: Judgment and Responsibility
Physical skills are only part of personal protection. PRIMA provides five questions to consider when thinking about whether and how to act.
Proportionality
Proportionality asks whether the response fits the threat.
Responsibility
Responsibility asks what obligations come with choosing force, including what happens afterward.
Immediacy
Immediacy asks whether the danger actually requires action now.
Minimal Necessity
Minimal Necessity asks whether this degree of force is really required.
Avoidance
Avoidance asks whether this could reasonably be prevented, disengaged from, escaped, or de-escalated.
PRIMA is not a legal test, certification, or authorization to use force. It is a framework for thinking clearly about difficult situations.
Find Your Starting Point
Explore training for adults, teens, and children, or contact us for help choosing the right program.