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, was introduced in the pilot episode, Wyle decided to leave the show as a regular character at the conclusion of season 11, despite offers to stay. He cited a family and an already lengthy tenure on the show as reasons. Carter was then out of the show by moving to Africa and marrying his love interest, Makemba Likasu. Noah Wyle agreed to make two appearances in Seasons 12 and 13. While he did so in Season 12, his Season 13 episodes were pushed back a year to season 14. Because of the WGA Strike, ER was renewed for a 15th season, Carter arrives to County General as a third-year medical student. Carter is characterized as lacking the ability of the most gifted physicians, for example, on his first day at County, he nearly vomits in the emergency room after seeing a critically wounded patient and has to be consoled by Chief Resident Dr. Mark Greene. Carter does share a very dedicated and compassionate approach with his patients and he was initially interested in surgery and completed the first year of a surgical residency involving mentoring by a surgical resident, Dr. Peter Benton. Extended exposure to the room reveals Carters true passion and he decides to change his specialty to emergency medicine. The change of heart is to Bentons dismay, Carter laments the lack of patient connection in surgery. He specifically regrets the lack of thorough follow-up and care in the surgical field, as a resident his confidence grows, and he often does whatever is in his power to help patients. During Season 6, Carter and his friend and medical student Lucy Knight were stabbed by patient Paul Sobricki, Knight is stabbed in the throat and dies from her injuries, Carter is stabbed in the back and his kidney is damaged, leaving him with lifelong kidney problems. As a result of Carters chronic battle with pain, survivor guilt, although initially opposed to going, Dr. Benton confronts him outside the hospital and boards the plane with him. At the end of the season, Kerry Weaver returns Carters application for Chief Resident because of his addiction, during Season 9, Carter begins sleeping with Abby after they were quarantined in the ER for two weeks because of the outbreak of monkeypox. However, Abbys brother Eric is diagnosed with bipolar disorder and his behavior becomes erratic, meanwhile, the health of Carters grandmother, Millicent, continues to decline, and his mother, Eleanor, has difficulty accepting her divorce from Carters father, Jack. Worse, Abby and Carter continue to disagree over whether or not Abby should be drinking at all and these personal issues come to a head when Eric reappears the same day Gamma dies. Carter is broken by his grief, yet Abby feels it is her duty to go and get her destitute brother, when the uninvited Eric behaves inappropriately at the funeral, even falling into her open grave, it marks the beginning of the end of Carter and Abbys relationship
Carter being held at gunpoint by guerrillas in the Congo.