Liam Padraic Aiken (born January 7, 1990) is an American actor who has starred in a number of films, such as Stepmom and Good Boy!. He more recently starred as Klaus Baudelaire in Lemony Snicket's A Series of Unfortunate Events, based on the series of books. Liam Aiken was born in New York City, the only child of Bill Aiken, an MTV producer, and an Irish-born mother, Moya Aiken. He attended Dwight Englewood School. He made his professional acting debut in a Ford Motor Company Windstar commercial. Aiken made his stage debut in the Broadway play A Doll's House at the age of seven and his film debut playing Parker Posey's son in Henry Fool in the same year.