George O'Malley.

About George O'Malley

George O'Malley, M.D., is a fictional character from the medical drama television series Grey's Anatomy, which airs on ABC in the United States. The character was created by series producer Shonda Rhimes and portrayed by actor T. R. Knight from 2005 to 2009. Introduced as a surgical intern at the fictional Seattle Grace Hospital, O'Malley worked his way up to the level of surgical resident. His relationships with his colleagues Meredith Grey, Cristina Yang, Izzie Stevens and Alex Karev were a central aspect of the series. O'Malley married Callie Torres, from whom he later separated to pursue a relationship with Stevens. He also briefly entertained romantic interests with Grey and Olivia Jankovic.