Located off Alton Parkway in the heart of Irvine CA, Karate Irvine, a United Studios of Self Defense Studio, has been here for over 20 years offering group and private lessons. In that time we have worked with thousands of men, women, and children in accomplishing their fitness and self defense goals! From Karate to self defense techniques from other Martial Arts Karate Irvine teaches discipline, strength of character and perseverance.USSD's unique system of Kempo-style martial arts from the finest instructors in the United States.