Guest Stars
Steve Alterman
voices Additional Voices
Mae Whitman
voices Heather
Mitch Carter
voices Additional Voices
Nolan North
voices Stoick Haddock
Chris Edgerly
voices Gobber
Hakeem Kae-Kazim
voices Krogan
Alan Shearman
voices Additional Voices
James Arnold Taylor
voices Throk
Edie Mirman
voices Additional Voices
Kyle T. Heffner
voices Additional Voices
Tom Kenny
voices Silent Sven
