Harry S. Robins

Harry Scifres Robins (born November 28, 1950) is an American voice actor, screenwriter and cartoonist. He is best known for his role as Isaac Kleiner in the Half-Life series and Tinker in Dota 2. Robins is also a member of the Church of the SubGenius, holding the official title of "Master of Church Secrets", and has written and drawn several comic books for them. He also voiced the narrator in Arise! The SubGenius Video and made an appearance in the 1999 documentary film Grass.