Popsugar Entertainment Grey's Anatomy Grey's Anatomy: Where Are They Now? Grey's Anatomy Alumni: Where Are They Now? September 8, 2016 by Nicole Weaver View On One Page Photo 12 of 28 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 12 Now the actor is on The 100, playing Thelonious. He has been on the mystery sci-fi show for all four seasons. Previous Next Start Slideshow Grey's AnatomyTV