Officer Diehl
Background
Diehl is a police officer for the Rodeo Hills Police Department in Rodeo Hills, California.
During the events of The Master: Season 1 Episode 12 Rogues played by Greg Gault
A disguised Jerry Donovan drops a note inside of Max Keller's van, but is spotted by Officer Thomas and Diehl and has to run away. A group of four men wearing ski masks arrive outside Robbins' house and are about to rob the place when John Peter McAllister starts to fight them. Max goes outside and helps him fight off the robbers who run away. Dispatch calls for an officer to respond to the scene and the van with the robbers pulls up next to Loring and Thomas, and Diehl get out and Loring tells them to get get into their police cruisers.
Max and Talia Donovan go to Jerry's apartment, but Thomas and Diehl are already in it. A fight breaks out, but Thomas and Diehl manage to escape. John goes to the police academy to meet Officer Orum and is ambushed by Loring, Orum, Thomas, Diehl and some other officers. He defeats them all and then escapes before Loring can shoot him. Max, John and Talia break into Campion's store. They start putting crates into Max's van, but are spotted by Orum, Diehl and another officer. The officers pull their guns on them and a fight breaks out, but John and Max knock the officers unconscious. Max and John drive to the Edgewood building to rescue Talia and Jerry and Max knocks Thomas and Diehl unconscious.