Hiccup

Jay Baruchel

Astrid

America Ferrera

Fishlegs

Christopher Mintz-Plasse

Snotlout (voice)

Zack Pearlman

Stoick the Vast (voice)

Nolan North

Tuffnut

T.J. Miller

Gobber (voice)

Chris Edgerly

Ruffnut

Andree Vermeulen

Ruffnut (voice) / Ruffnut / Mrs. Larsen (voice)

Julie Marcus

Heather

Mae Whitman

Mildew (voice)

Stephen Root

Mulch (voice)

Tim Conway

Bucket (voice)

Thomas F. Wilson

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

Brook Chalmers

Savage (voice)

Paul Rugg

Alvin (voice)

Mark Hamill

Trader Johann (voice)

Michael Goldstrom

Gustav (voice)

Lucas Grabeel

Spitelout (voice)

David Tennant