Reherman was born on July 4, 1966, in Louisville, Kentucky. He attended Cornell University, where he played football as an offensive lineman. Following his graduation with a B.S. in 1988, he attended the Miami Dolphins training camp trying out for the team's offensive line, but did not make the team. Thereafter, he earned his MBA at the UCLA Anderson School of Management. He was pursuing a doctorate in economics at the University of California, Los Angeles, although left to begin his television and film career.
In 1992, Reherman made his first professional acting appearance as an unnamed football player in the television show Columbo. The following year, he had a small named part in the film Last Action Hero, but began creating a name when he joined the American Gladiators television show as "Hawk". He remained with the show until its cancelation in 1996, also appearing from 1995 to 1996 in the spin-off International Gladiators 1. Through this time and after, he continued with small spots in television programs and television hosting roles, including a recurring position with the American Veterans Awards on the History Channel. Reherman reprised his "Hawk" nickname on RollerJam, serving as color commentator.
In 2007, Reherman became the regular host of Hot Rod TV and Forza Motorsport Showdown on the television network Speed. He hosted Forza Motorsport Showdown for one season, while his work with Hot Rod TV is ongoing. He also hosted the series Battle of the Supercars (2010) (Speed), Off-Road Overhaul (2011–2012) (Outdoor Channel), and Game Changers (2013) (Stage 5 TV).
Reherman also worked in video games, providing voices for characters in Dead Rising 3 and Ghost Recon Advanced Warfighter. The projects he was working when he died will go on as planned. In 2010, he appeared in a recurring role on the ABC soap opera General Hospital.
He was found dead on March 1, 2016, by his girlfriend, Natalina Maggio, in his house in Manhattan Beach, California. He had died from blood clot after undergoing hip replacement surgery a few weeks earlier.
