Sensei Dirk Ackerman, 5th Dan
- Qualified Cost and Management Accountant & Part Chartered Institute of Management Accountants (CIMA)
- Karate Instructor and owner of JION
- Has been doing karate for 32 years
- Western Province Representative for many years
- Successfully completed the WSKF (Kensho Sei) instructors course
- 2 times South African WSKF Senior Open Kata and Kumite Champion.
- Silver and Bronze Medallist at WSKF World Championship in Tokyo Japan 200
- Sensei Dirk is also a member of the National Association for Professional Martial Artists (NAPMA)