Attended the University of Tampa, where he played for the football team. While there, he met former Olympic wrestler Dale Lewis. They became friends, and Lewis paid Petit to drive him to his bookings at professional wrestling events. Cousin Luke stated that he began wrestling after spending a couple of weeks practicing in a gym. At one of Lewis’ events, the company did not have enough wrestlers and he was asked to fill in. He teamed with Lewis and Gypsy Joe Rosario in a six-man match. While wrestling in Florida in the 1980s, he joined a stable named the Army of Darkness. As a member of the group, which used a devil-worshipping gimmick, he used the ring name Kharma.
During a conversation with George Scott, a booker from the World Wrestling Federation, Petit received an unenthusiastic response to his query about joining the promotion. Petit then showed Scott a picture he had taken of himself as a joke, in which he wore “cutoff jeans, overalls, and a floppy hat”. After seeing the picture, Scott offered Petit the role of Cousin Luke, a member of the Hillbilly Family led by Hillbilly Jim. As part of this gimmick, Petit was silent and expressionless and portrayed a rural Southerner who did not know how to wrestle. He joined the other hillbillies in their feud with Roddy Piper, Bob Orton, Jr., and Jesse Ventura. Shortly after joining the company, however, Petit broke his ankle due to a problem with a defective wrestling ring. He was asked to compete at WrestleMania 2, the WWF’s biggest show of the year, but had to decline due to the injury.
Cousin Luke left the WWF shortly thereafter and made a bigger name for himself on the independent circuit. He was a mainstay in the NAWA where he was a regular on almost every event.
He died on September 29, 2013 and was believed to be in his mid-60s when he died. He had suffered from multiple sclerosis and diabetes in his later years and was residing in a long-term health facility when he died.