Sophia Bush is sharing the first look at her new character in Grey’s Anatomy season 21. The One Tree Hill and Chicago PD alum was announced to be joining ABC’s long-running medical drama in its current year. Some pertinent details about Bush’s Grey’s Anatomy season 21 character have been revealed, including her name Dr. Cass Beckman. Described as “amiable, fun, and a little messy around the edges,” she is a trauma surgeon at Seattle Presbyterian. Meanwhile, her husband, Dr. David Beckman is a cardiothoracic surgeon at Grey Sloan. The character will debut on November 27.