Dr. Holden RadcliffePlayed by John Hannah
With Hive dead and recently having been cleared of all crimes, Dr. Holden Radcliffe is now eager to prove himself to S.H.I.E.L.D. that he's not just a genius, but an advocate of all that S.H.I.E.L.D. stands for – saving lives. He and Fitz have developed a friendship in the interim and will work together to solve some of the team's biggest problems… with science!