Guest Stars Steve Alterman voices Additional Voices Mae Whitman voices Heather Mitch Carter voices Additional Voices Nolan North voices Stoick Haddock JB Blanc voices Ryker Chris Edgerly voices Gobber Hakeem Kae-Kazim voices Krogan Paula Jane Newman voices Additional Voices Alan Shearman voices Additional Voices James Arnold Taylor voices Throk Paul Rugg voices Savage Edie Mirman voices Additional Voices Kyle T. Heffner voices Additional Voices Tom Kenny voices Silent Sven Tom Kenny voices Amos Nolan North voices Berthel