|First Appearance||"Mea Culpa"|
Reggie Gregg is a friend of ADA Stone, who sexually assaulted a woman named Sarah Kent several years ago and nearly successfully framed Stone for it.
When Kent, under the belief that Stone was her rapist, confronted Stone in a bar one night and pressed charges against him, Lieutenant Benson investigated and eventually identified Gregg as the real rapist. Benson then arrested Gregg for rape in the first degree and he was imprisoned, while the charges against Stone were dropped. (SVU: "Mea Culpa")