Thurop Van Orman Flapjack Voice, Writer Brian Doyle-Murray Captain K'nuckles Voice Roz Ryan Bubbie Voice Steve Little Crew Member No. 4, Franklin the Adventure Writer, Snatch Voice, Writer Charles Shaughnessy Crew Member No. 1 Guest Voice J.K. Simmons Captain, Crew Member No. 3 Guest Voice Gregg Turkington Crew Member No. 2, Sailor, Toast the Poet Guest Voice Jeff Bennett Peppermint Larry, Scoops Pennington Voice S. Scott Bullock Jackson the Bookkeeper, Patch Guest Voice Richard McGonagle Eight-Armed Willy Guest Voice Kent Osborne Writer, Writer, Voice Director Mike Roth Writer Sean Szeles Writer, Writer Somvilay Xayaphone Writer J.G. Quintel Writer Jackie Buscarino Writer John Infantino Writer