Question: Which American actor is best known for portraying Julian Sark on the ABC television series "Alias?" 
Sentence (from "David Anders"): He is best known for his roles as Julian Sark on "Alias", as Adam Monroe on "Heroes", as John Gilbert in the TV series "The Vampire Diaries", as Victor Frankenstein/Dr. Whale on ABC's "Once Upon a Time", and as Blaine "DeBeers" McDonough on "iZombie".
Relevant evidence: No