Dr. John Truman Carter III, portrayed by Noah Wyle, is a fictional character from the American television series "ER". The character, called simply "Carter" by most other characters, is introduced in the pilot episode and appears for eleven consecutive seasons. Wyle decided to leave the show as a regular character at the conclusion of season 11, despite offers to stay. He cited a budding family and an already lengthy tenure on the show as reasons. Carter was then written out of the show by moving to Africa and marrying his love interest, Makemba Likasu, in the episode "The Show Must Go On".