Mark Sloan

Mark Everett Sloan, M.D., F.A.C.S. is a fictional character from ABC's medical drama television series Grey's Anatomy, portrayed by Eric Dane. Created by showrunner Shonda Rhimes, the character was introduced in season two as Derek Shepherd's best friend. Mark caused the end of Derek’s marriage by sleeping with Derek's then-wife, Addison Montgomery. Mark moves to Seattle in season three to make amends with Derek and becomes Seattle Grace Hospital's new plastic surgery attending, after which he is dubbed "McSteamy" by the female interns for his good looks. Mark's focal storyline in the series involved his romantic relationship with Lexie Grey (Chyler Leigh), one of the interns who was on his service when they started dating. Both he and Lexie sustained fatal injuries during an aviation accident in the eighth-season finale, and Seattle Grace Mercy West is later renamed Grey Sloan Memorial Hospital after their passing.