Percival Ulysses "Perry" Cox, M.D. (most commonly referred to as Dr. Cox), is a fictional character played by John C. McGinley on the American television comedy-drama Scrubs. Dr. Cox appeared in every episode except, "My Last Words," "My Comedy Show," and "My Full Moon," which are all in season 8. McGinley is the only original cast member besides Zach Braff and Donald Faison who returned for season 9 as a regular cast member.