Arleen Gonzales is the Commanding Officer of the LAPD Robbery/Homicide Division. She is a cool professional who keeps her private life private and has a passionate advocate for her detectives. In the episode, "East Pasadena," it's revealed that she has an 11-year-old son, but was only mentioned. Arlene also has a law degree. She pulled a few strings to get Ricardo Morales into Homicide as T.J.'s new partner. She was seen rattled when Rex Winters died in the hospital after getting shot.