Dr. Nathan Cox is a psychiatrist of a psych ward treating people, especially any veterans suffering PTSD.
He is portrayed by Arnell Powell in Spilt Milk in Lethal Weapon.
Personality
Dr. Cox took being a psychiatrist very seriously, helping other people with problems, and even veterans who came back from war with PTSD.
Biography
Dr. Cox has had a history of helping people in need and in crisis. He's also helped and treated veterans who came back from war who'd end up suffering PTSD. He's been recently treating Chad Jackson, a Navy SEAL veteran, who's currently seeking security guard employment.
Spilt Milk
Dr. Cox is first seen talking with Riggs and Murtaugh about what all he knows and how long he's been treating Jackson since he's been seeing him and prescribing him the "psychiatry pill" and he told them only little what he could tell hem, but wasn't telling them everything.