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 SloanWriter / Producer Sandra RabinsExecutive Producer Michael RoseProduction Design Kendra Vander VlietLayout Tony SirunoCharacter Designer 
