Viggo has captured Heather and the Flightmare, and now Hiccup must outthink this dangerous new opponent.
Guest Cast
Mae Whitman
voices Heather
David Faustino
voices Dagur
Alfred Molina
voices Viggo GrimbornCast Appearances
Jay Baruchel
voices Hiccup Haddock
America Ferrera
voices Astrid Hofferson
T.J. Miller
voices Tuffnut Thorston
Zack Pearlman
voices Snotlout Jorgenson
Andrée Vermeulen
voices Ruffnut ThorstonEpisode Discussion
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