Dr. Brain: Cast Rate: –☹️ Very Bad🙁 Bad😐 Average🙂 Good😃 Excellent🤩 Super! ★ Save Rating✔ Rating Saved! Notify me: –about new episodeabout new seasonabout end of season Subscribe✔ Subscription Saved! Dr. Brain Science-Fiction, Drama, Thriller – 12/10/21 https://tv.apple.com/kr/show/umc.cmc.60vbrno9xpmmax8wmdo4ow05u GeneralEpisodesTranslationsCastCharactersGallery Cast See full cast → Lee Sun Gyun as Sewon Koh Lee Yoo Young as Jaeyi Jung Jung Jae Yi Park Hee Soon as Kangmu Lee Lee Kang Moo Seo Ji Hye as Lieutenant Choi Lee Jae Won as Namil Hong Hong Na Mil Lee Sun Gyun as Koh Se Won Seo Ji Hye as Choi Soo Suk