Tiny Toon Adventures/How to Train Your Dragon

Buster Bunny as Toothless

Plunky Ducky as Hookfang

Fifi la Fume as Stormfly

Rita (from Animaniacs) as Meatlug

Sweetie Bird & Hamton J. Pig as Barf & Belch

The Bear (from Balto) as The Red Death

Furball as Cloudjumper

RJ (from Over the Hedge) as Skullcrusher

Hammy (from Over the Hedge) as Grump

Yogi Bear (from Yogi Bear (2010)) as Valka's Bewilderbeast

Vincent (from Over the Hedge) as Drago's Bewilderbeast

Babs Bunny as Light Fury