Grant Gustin and his co-stars hit up Comic-Con again!

Grant, along with Danielle Panabaker, Candice Patton, Hartley Sawyer, Tom Cavanagh, and Carlos Valdes, were in attendance at the panel, held on Saturday (July 20) in San Diego, Calif.

During the panel, there was a big reveal! Heroes star Sendhil Ramamurthy will join the cast in the recurring role of DC villain Bloodwork/Dr. Ramsey Rosso! In addition, you can check out the concept artwork for Bloodwork in the gallery.

Dr. Ramsey Rosso is a brilliant physician with a genius intellect, and the world’s leading expert on hematological oncology. A former colleague of S.T.A.R. Labs’ Caitlin Snow (Panabaker), Rosso rekindles their friendship after they are reunited by an unexpected event. But their longtime bond is quickly shattered when the doctor’s desire to defy the laws of nature takes him down a dark path…one that transforms Rosso from an old friend into the most chilling villain Team Flash has ever faced: the monstrous Bloodwork.