John (JD) Dorian
Since finishing medical school with his best friend (Turk), JD is determined to make a difference, one patient at a time.
JD's distractions include hooking up with Elliot, sucking up to Dr Cox and running from a demented janitor.
JD's biggest distraction, however, is generally his over-active imagination, which tends to visualise worst-case scenarios of the funniest kind.