- Brook Chalmers - Sven (voice)
- Brook Chalmers - Henchman (voice) / Outcast Soldiers (voice)
- Brook Chalmers - Berserker Herald (voice)
- Brook Chalmers - Sven (voice)
- Brook Chalmers - Captain Vorg / Outcast Guard (voice)
- Brook Chalmers - Fearless Finn Hofferson (voice)
- Brook Chalmers - Viking Farmer (voice)
- Brook Chalmers - Berserker Herald (voice)
- Brook Chalmers - Outcast Soldier (voice)
- Brook Chalmers - Outcast Guard (voice) / Outcast Soldier (voice)
- Brook Chalmers - Captain Vorg / Sven (voice)
- Brook Chalmers - Berkian Man (voice)
- Brook Chalmers - Captain Vorg (voice)
- Tim Conway - Mulch (voice)
- Stephen Root - Mildew (voice)
- Julie Marcus - Ruffnut (voice)
- Julie Marcus - Ruffnut / Mrs. Larsen (voice)
- Paul Rugg - Savage (voice)
- Lucas Grabeel - Gustav (voice)
- David Faustino - Dagur (voice)
- David Tennant - Spitelout (voice)
- Michael Goldstrom - Trader Johann (voice)
- Mae Whitman - Heather (voice)
- Thomas F. Wilson - Bucket (voice)
- Mark Hamill - Alvin (voice)
- Chris Edgerly - Gobber (voice)
- Adam Henry
- Sandra Rabins
- Douglas Sloan
Mark Hamill interpreta a Alvin (voice) en la serie.
Thomas F. Wilson interpreta a Bucket (voice) en la serie.
Jay Baruchel hace el papel de Hiccup Horrendous Haddock III (voice).
Christopher Mintz-Plasse interpreta a Fishlegs (voice) en la serie.
T.J. Miller interpreta a Tuffnut (voice) en la serie.
Andree Vermeulen interpreta a Ruffnut (voice) en la serie.
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