John Noble

as Lighthouse Keeper

as Odin (voice)(2 eps)

as Odin / Storyteller (voice)(1 ep)

as George Reilly

as Falco (voice)(1 ep)

as Wilkinson(3 eps)

as John Noble(1 ep)

as Frank Campano(6 eps)

as Fields(1 ep)

as Caliban(2 eps)

as Diviner (voice)(19 eps)

as Ilthuran (voice)(8 eps)

as Father Kastner

as Otto(1 ep)

as Moon Sand Man

as Frederic Hauser(1 ep)

as Sam Butcher(2 eps)

as Grandfather James

as Elliot Festervan(1 ep)

as Nicholas Tanz(3 eps)

as Mallus (voice)(6 eps)

as John Noble / Mallus(1 ep)

as Monsignor Vega(1 ep)

as Bishop John McNally(6 eps)

as Pat Shepherd

as Unicron (voice)

as Raleigh Sinclair III(2 eps)

as Henry Parrish(25 eps)

as Brainiac (voice)

as The Man

as Morland Holmes(15 eps)

as Edward Stanley(1 ep)

as Self - Host(19 eps)

as Unicron (voice)(4 eps)

as Self(1 ep)

as Eddie Thomas

as The Dragon Spirit (voice)

as Self

as Matthew Ashbaugh(2 eps)

as Walter Bishop(100 eps)

as Ben

as Cap Blackheart(13 eps)

as Blackheart(13 eps)

as Prince Admantha

as Self

as The C.E.O.(1 ep)

as Ivan Yugorsky

as Self

as Howard Peet

as Frank Hurley (voice)

as Irving Pichel(2 eps)

as Irving Pichel, Director

as Denethor

as Dimedrol Grebenshchikov

as Fergus Hunter

as Paul Baylis

as Anatoly Markov(2 eps)

as Mr. Norris

as Dad

as Sorrentino

as Inspector Robert Anderson(1 ep)

as Dr Madsen(1 ep)

as Mr Madsen(15 eps)

as John Madsen(7 eps)

as Meurik(1 ep)

as General Booth

as Sergeant(1 ep)

as Prime Minister's Minder

as Dr. Richards

as Ben Fiddler