Buck (Grey's Anatomy)

Buck is a fourth-year medical student working as a sub-intern at Grey Sloan Memorial Hospital.

History
Buck came to the hospital to work as a sub-intern. On his first day, while he was on a tour, he saw April do a thoracotomy in the ER and fainted at the sight. ("Break Down the House")

After the sub-interns were challenged to find Megan Hunt a suitable abdominal wall donor, Buck suggested a woman who had died of a shotgun wound to the abdomen, making her ineligible. ("Get Off on the Pain")

Career
He is a fourth-year medical student hired as a sub-intern, a kind of prolonged interview for an internship, at Grey Sloan Memorial.