Doctor Percival "Perry" Cox is a doctor at Sacred Heart in Scrubs played by John C. McGinley. Dr. Cox keeps a rough exterior and is very sarcastic even though he's always making his decisions to best help patients.
J.D. always looks up to Cox as a mentor but he preetends to hate J.D., even though he deep down things he's a good doctor. He is an avid sports nut and frequently is seen wearing a Detroit Red Wings jersey.
He was the interim Chief of Medicine after Dr. Kelso retired and before Dr. Maddox took over. He is expected to take back over this season.
Dr. Cox: By the way, if you want, Jack's birthday is in the spring... sometime.
Paige: March 21st.
Look, if you get up there and start kissing Kelso's ass, all your fellow attendings will forever think of you as a brown-nosing toady. On the other hand, if you don't pucker up, Kelso will make your life a living hell. You're officially trapped.Dr. Cox