Michael Emerson is an American actor who is best known for his roles as Benjamin Linus on Lost (2006–2010) and as Harold Finch in the CBS series Person of Interest (2011–2016). Other prominent roles include Zep Hindle in the horror film Saw (2004) and the recurring role of Cayden James on Arrow (2017–2018). He currently stars as Dr. Leland Townsend in the Paramount+ thriller series Evil (2019–present).

Benjamin Linus is a fictional character portrayed by Michael Emerson on the ABC television series Lost. Ben was the leader of a group of island natives called the Others and was initially known as Henry Gale to the survivors of Oceanic Flight 815. He began as the main antagonist during the second and third seasons, but in subsequent seasons, becomes a morally ambiguous ally to the main characters. Other characters frequently describe him as loyal only to himself, though it is also often hinted that he may be driven by some higher purpose.