Grey's Anatomy Sanctuary (TV Episode 2010) - Cast and crew credits, including actors, actresses, directors, writers and more. Learn more about the full cast of Grey's Anatomy with news, photos, videos and more at TV Guide The cast of 'Grey's Anatomy' Season 1 is iconic, but many of them are no longer on the show. Find out what they've been up to since they left. New relationships emerge and the strongest commitments are tested. From successes in the operating room to mistakes in the bedroom and all the thrilling drama in between the doctors find a way to survive as long as they lean on one another. Cast: Series - Grey's Anatomy S6 - 2010 Following O'Malley's death and Stevens' departure, Jesse Williams and Sarah Drew joined the cast as new residents from Mercy West Jackson Avery and April Kepner both having made their series debuts as recurring characters in the sixth season. The first five primary characters who are first presented as interns and later on progressed in the surgical program after a year are Alex Karev (Justin Chambers), George O'Malley (T.R. Knight), Meredith Grey (Ellen Pompeo), Cristina Yang (Sandra Oh), and Izzie Stevens (Katherine Heigl). The seventh season of Grey's Anatomy premiered September 23, 2010 and ended May 19, 2011. It was broadcast on Thursday nights at 9 PM on ABC. The season consists of 22 episodes. Meet the cast and hosts of Grey's Anatomy, read their bios, top moments, and view their photos, videos and more at ABC.com Meet the full cast and crew of Grey's Anatomy including actors, directors, producers, and more.