Hiccup

Jay Baruchel

Astrid

America Ferrera

Fishlegs

Christopher Mintz-Plasse

Snotlout (voice)

Zack Pearlman

Stoick the Vast (voice)

Nolan North

Tuffnut

T.J. Miller

Ruffnut

Julie Marcus

Gobber (voice)

Chris Edgerly

Ruffnut (voice)

Andree Vermeulen

Mildew (voice)

Stephen Root

Mulch (voice)

Tim Conway

Bucket

Thomas F. Wilson

Sven (voice) / Captain Vorg / Outcast Soldier (voice)

Brook Chalmers

Savage (voice)

Paul Rugg

Alvin the Treacherous

Mark Hamill

Dagus the Deranged

David Faustino

Trader Johann (voice)

Michael Goldstrom

Heather

Mae Whitman

Gustav (voice)

Lucas Grabeel

Spitelout (voice)

David Tennant