Le Noir was born in Bryan, Texas but spent his early years in Belle Chasse, Louisiana, part of the New Orleans metropolitan area.
Aside from serving in the military, Le Noir's father was a heavyweight professional boxer who was a natural "protector" of not only his family and friends, but of anyone he felt was being abused or mistreated.
A black belt in martial arts since 1975, Le Noir pioneered the Arlington Police Academy's now required program in defensive tactics.
One of Le Noir's most famous cases was that of serial killer Jack Reeves, which has been featured in eight different documentary programs including HBO's America Undercover: Autopsy series and the subject of the book Mail Order Murder by true crime author Patricia Springer.
He is often called on to teach homicide investigation at the regional police academy, and lecture at universities while pursuing a second career in the entertainment venue.