Our Team

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Where the Passion Begins

Our incredible team is truly the heart of AABBA. It’s their dedication, passion and talent that keeps students invested in the learning process. Take a look below to learn more about the team.

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Master Instructor Carl Hultin

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  • 7th Degree Black Belt

  • Hayashi-ha Shitoryu Karate-do

  • 3rd Degree Black Belt Kenshin Ryu

  • 2nd Degree Black Belt Yamanni Ryu Kobudo

  • Vice President USA National Karate Federation and Member Referee Council

  • World Karate Federation Judge

  • Certified Personal Trainer

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Chief Instructor Eric Sevilla

  • 5th Degree Black Belt

  • 1st Degree Black Belt Weapons

  • 8 Time National Kata Champion

  • 7 Time National Kumite Champion

  • Cross Training in Jujitsu

  • Elite Team Coach

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Senior Instructor Yong Hultin

  • 4th Degree Black Belt

  • 1st Degree Black Belt in Kenshin Ryu Kobudo

  • Five time National Kata Champion

  • Certified USA NKF Referee

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Senior Instructor Jonathan Chin

  • 4th Degree Black Belt

  • 1st Degree Black Belt Weapons

  • USANKF Official and Elite Team Coach

  • Instructor for the City of San Ramon Karate Program

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Senior Instructor William Fuentes

  • 5th Degree Black Belt

  • 1st Degree Black Belt in Kenshin Ryu Kobudo

  • USA NKF Referee

  • Instructor for City of Pleasant Hill Karate Program

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Instructor Laura Abello

  • 2nd Degree Black Belt

  • Certified USA NKF referee

  • Administrator

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Instructor Johanna Abello

  • 2nd Degree Black Belt

  • 1st Degree Black Belt Weapons

  • Instructor for the City of San Ramon Karate Program

  • Elite Team Coach

  • Certified Personal Trainer

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Assistant Instructor Adrianna Villesis

  • 2nd Degree Black Belt

  • 3x National Kata Champion

  • 3x Junior International Cup Kata Champion

  • US Open Kata Champion

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Assistant Instructor Kyle Louie

  • 2nd Degree Black Belt

  • 2x National Kata Champion

  • Junior International Cup Kata Champion

  • US Open Kata Champion

Drop in for a free, introductory class

21001 San Ramon Valley Blvd, A7, San Ramon CA 94583 

925 829 4265

Japan Karatedo Hayashi-ha Shitoryukai
USA NKF
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The Academy also offers programs through the San Ramon and Pleasant Hill Community Center. Instruction is offered by Sensei Johanna Abello, 2th degree black belt  and William Fuentes, 5th degree black belt.