Fightmaster is one of the new additions to the Grey's cast for season 18, playing Dr. Kai Bartley, a neuroscientist specialising in stem-cell research. They meet Meredith and Amelia when the Seattle-based duo head to Minnesota to work on Parkinson's research and quickly develop a professional (and possibly personal) rapport with fellow neuro specialist Amelia. In October, following their first couple of guest appearances, Variety reported that Fightmaster was being upped to a recurring role for the season. This also marks the first nonbinary main character in Grey's history.
Fightmaster's career has taken off in the past couple of years, and Grey's is just the latest! Following stints in the comedy world, including the famous Second City troupe, they most recently spent two seasons recurring on Hulu's comedy Shrill.