Roser Martial Arts Center in Plano, Texas Voted #1 for Self Defense. Gain Powerful Tools for Self-Defense, Inner-Strength & a Strong, Healthy Body. Our kid's and adult's martial arts programs are the programs that everyone's raving about. That's because we blend self-defense, fitness, and life skills into one heck of an experience for people of all ages. That's because every kid's class is fun, and the adult's is packed with powerful tactics, and both programs are full of healthy exercise & fitness!