Troy Dorsey was born and raised in Mansfield, Texas. In 1973, at the age of ten, Troy began karate and in 1979 received his Black Belt in Tae Kwon Do - Karate.

Troy began his fighting career after receiving his Black Belt and quickly became a top tournament competitor winning numerous regional and national competitions and earning a reputation in Semi-Contact Karate. After a brief and successful run as an amateur Kickboxer he turned professional; winning multiple International and World Kickboxing titles sanctioned by K.I.C.K, ISKA, and WAKO. As a Full-Contact Kickboxer his only loss was a controversial split decision against dominant long time PKA Bantamweight Champion Felipe Garcia in Garcia's hometown of Denver, Colorado. Six months later Troy would conclusively avenge that blemish in a very one-sided rematch which effectively ended Garcia's 8 year reign and ushering him into retirement. Throughout the mid 1980s Troy completely dominated his weight class handely outclassing all challengers.

Milestones of Troy's career include a one sided knockout defeat of highly regarded Santae Wilson for the US. Featherweight Championship, and his literal destruction of #1 challenger Steve Demechuk. Troy would drop Demenchuk no less than 6 times before finally knocking his opponent out.

Troy is widely considered one of Full Contact Kickboxing's greatest fighters and a much sought after trainer. On June 18, 2010 he was awarded a 8th Degree Black Belt.

Troy holds a particularly unique disntinction as the only man in history to hold World Titles in Kickboxing, Karate and Boxing.

In 1988 Troy became a Professional boxer. As a boxer Troy held the NABF Featherweight Title, IBO Super Featherweight Title and also won the IBF Featherweight World Championship. His style and endurance made him one of the eras most exciting fighters.

Troy's boxing resume saw him face some of the best fighters in his class with mixed results. One of his greatest performances was a fast paced slugging match with national champion Harold Rhodes for the NABF Featherweight Championship. The two men met each round center ring both firing incredible volumes of powerful punches until Dorsey dropped Rhodes for a 10 count in the final moments of an exciting bout. Troy Dorsey is perhaps best known for two non-stop wars with IBF World Champion Jorge Páez including a highly controversial decision won by Paez in Dorsey's first title attempt. Brutal battles with Champions Gabriel Ruelas, Manuel Medina, Kevin Kelley, Jesse James Leija and Tom Johnson as well as facing Olympian and future 5 time World champion Oscar De la Hoya were milestones in Troy's boxing career. Troy was known predominantly for his indominatable spirit, amazing physical endurance and a propensity to hammer an opponent with a withering constant barrage of punches. His overall aggressiveness and refusal to backdown prompted former Featherweight champion Kevin Kelley to equate his 12 round decision over Dorsey "Like a night spent in Hell!". Unfortunately Dorsey had a tendency to cut easily and saw several of his later fights stopped due to cuts: this subsequently hastened his retirement from the ring in 1998.

Troy is actively involved in the community through his karate studios. He participated in the building and is a former honorary board member of Jonathan's Place which is a home for drug exposed children in Dallas. In 1997, Troy received the Outstanding Volunteer Award for Celebrity/Community Leader from Jonathan's Place. Each year Troy is involved with fund raisers for St. Jude's Children's Hospital, Muscular Dystrophy Association, Leukemia Society, Boy Scouts of America, Chuck Norris's Kick Start Program and North Texas Food Bank. Troy is also available for public speaking on topics such as self-discipline, respect, self-control and drug and alcohol abuse.

As of 2010, Troy owns and operates Troy Dorsey's Karate in Mansfield, Texas. He currently resides in Mansfield with his wife, Leslie and two daughters Kendra and Shelly.