Viggo has captured Heather and the Flightmare, and now Hiccup must outthink this dangerous new opponent.
Guest Cast
Mae Whitman
voices HeatherDavid Faustino
voices DagurAlfred Molina
voices Viggo GrimbornCast Appearances
Jay Baruchel
voices Hiccup HaddockAmerica Ferrera
voices Astrid HoffersonT.J. Miller
voices Tuffnut ThorstonZack Pearlman
voices Snotlout JorgensonAndrée Vermeulen
voices Ruffnut ThorstonEpisode Discussion
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