Gene "Cousin Luke" Petit passed away Sunday morning, according to a report from Mike Johnson of PWInsider.

The cause of death is currently unknown. Petit had been suffering from multiple sclerosis in recent years, which caused him to lose a considerable amount of weight.

Petit is best known as portraying "Cousin Luke" in WWE in 1985 and 1986 as part of Hillbilly Jim's family. Hillbilly Jim is now the only member still alive -- Uncle Elmer (Stan Frazier) died in 1992 from kidney failure and Cousin Junior (Larry Kean) passed away in 2009 after a heart attack.