Killer Cop

A Killer Cop is an officer of the law who commits an unjustifiable homicide. Not to be confused with Cop Killer, which is a person who kills at least one person working in the local police force or law enforcement agency.

On Criminal Minds

 * Tim Vogel ("Extreme Aggressor")
 * Vincent Shyer ("Broken Mirror")
 * Bruno Hawks ("Secrets and Lies")
 * Nathan Tubbs ("Doubt")
 * Jason Clark Battle ("Lucky" and "Penelope")
 * Ronald Boyd ("A Rite of Passage")
 * John Curtis ("The Silencer", "The Apprenticeship", "Magnificent Light", "Perennials", "Zugzwang", "Broken", "Carbon Copy", "Brothers Hotchner" and "The Replicator")
 * Wayne Gulino ("The Return")
 * The Rogue Deputies ("Angels" and "Demons")
 * Calvin Shaw ("Alpha Male", "Assistance Is Futile", "In the Dark", "Hell's Kitchen", and "Green Light")
 * Brian Cochran (NSA Director)

Real World

 * Gerard Schaefer (Sheriff's Deputy)
 * Tiago Gomes da Rocha (Security Guard)