» characters · dr. chistopher "topher" zia
A former army medic and Ranger and TC's longtime friend, to the point his oldest daughter calls him "Uncle TC". Married with a daughter, his wife gave birth to twin daughters during a storm. In season 2, he becomes head of the ER night shift. In the season 3 finale, he is fired by the new E.R. owner, Dr. Julian Cummings, for being too willing to give high-priced treatments to people who can't pay. In the second episode of the fourth season it is revealed that Topher, along with his oldest daughter, were killed in a car accident (offscreen) after being hit by a drunk driver. Dr. Chistopher "Topher" Zia was portrayed by Ken Leung.