Give some stream of consciousness and then the answer. Passage: David Anders Holt (born March 11, 1981), known professionally as David Anders, is an American television and stage actor. 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. Although Anders is American, a few of his roles have required him to use a British Home counties accent.\n\nQuestion: Based on this passage, who played dr frankenstein in once upon a time?
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This is the relevant information: 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.
Therefore, the answer is David Anders.
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