America FerreraAstrid (voice) Zack PearlmanSnotlout (voice) Nolan NorthStoick the Vast (voice) Chris EdgerlyGobber (voice) Andree VermeulenRuffnut (voice) Julie MarcusRuffnut (voice) Stephen RootMildew (voice) Thomas F. WilsonBucket (voice) Brook ChalmersSven (voice) Michael GoldstromTrader Johann (voice) Lucas GrabeelGustav (voice) David TennantSpitelout (voice) Mae WhitmanHeather (voice) Douglas SloanSceneggiatore / Produttore Linda TeverbaughSceneggiatore Mike TeverbaughSceneggiatore Sandra RabinsProduttore Esecutivo Michael RoseProduction Design Kendra Vander VlietLayout Tony SirunoCharacter Designer 
