For the last decade Warren's been involved in Full Contact Karate Knockdown tournaments and has fought against some of the countries top fighters. Warren has been the NZ and Australian IKO1 Super Heavyweight Champion.

In recent years he has competed in the USA, Japan, Russia and Australia. In his own words "This is a true test of technique, focus, power and spirit".

Warren's martial arts and life philosophy is to always have an open mind and show humility.