Modest Mouse singer Isaac Brock, a fan of the series, provided vocals for the version in the special.
•
Eight-Armed Willy (vocal effects by Richard McGonagle) – An extremely large Giant Pacific Octopus with a cut sticking out of his head, resembling a hole.
The Marvelous Land of Oz | The Misadventures of Margaret | Tal: His Marvelous Adventures with Noom-Zor-Noom | Marvelous Entertainment | The Marvelous Misadventures of Flapjack | Marvin's Marvelous Mechanical Museum (album) | Marvin's Marvelous Mechanical Museum |
Hirsch first started out as a writer and storyboard artist for The Marvelous Misadventures of Flapjack where he worked alongside and befriended fellow animators J.G. Quintel (who would go on to create Regular Show) and Pendleton Ward (who would go on to create Adventure Time).