Lee Grinner Pace (born March 25, 1979) is an American actor. He is known for starring as Thranduil the Elvenking in The Hobbit trilogy and as Joe MacMillan in the AMC period drama television series Halt and Catch Fire. He has also appeared in the Marvel Cinematic Universe as Ronan the Accuser, a role he first played in Guardians of the Galaxy and reprised in Captain Marvel. Pace earned a 2008 Emmy nomination for his portrayal of Ned in the ABC comedy-drama Pushing Daisies. Since 2021, he stars as the galactic emperor Brother Day in the television series Foundation, based on the stories of Isaac Asimov.