Dr. Robert "Bob Kelso" is the former Chief of Medicine of Sacred Heart on Scrubs and is played by Ken Jenkins. Although Dr. Kelso is generally portrayed as mean-spirited and heartless, he really is just doing his job as the Chief and is looking out for the hospital's best interests. Now retired, Dr. Kelso still hangs around the hospital and is much more human showing his softer side and ofering advice.
Kelso often refers to his obese wife Enid and his gay son Harrison, though neither have appeared on the show.
Dr. Kelso: You know I could look at the demented crayon scratchings of a madman all day, but I got a hospital to run. Did you wax over there yet?
Janitor: No sir... I'll get a new uniform or I'll wax everything in your WORLD!
Turk: Dr. Kelso, I have a low-anterior resection later on this afternoon, and I'd really like to exercise in order to be at my best.
Dr. Kelso: Well... I'd really like to have grand-kids someday, but the last five Christmases, my son has brought his roommate Brad home! So, you tell me whether life is fair.