Currently attending graduate school in Chicago for Muscle Activation Therapy, this Munster, Indiana native is proficient in various forms of martial arts. Growing up idolizing Bruce Lee, Stephan has excelled at jujitsu, taekwondo, wrestling, and was a local 2-time Golden Gloves champion in the super-heavyweight division. He is also a personal trainer with a degree in Sports Medicine from Purdue University. Stephan is a member of the Carlson Gracie Team.
MMA record is 7-2-0 as of October 2005
Bonnar is a co-founder of the company N Gauge Inc, that provides original high-end paintings and lithograph artwork commemorating MMA events and athletes. The company also offers autographed originals and copies and plans on expanding to provide T-Shirts of their artwork.
