Thurop Van Orman Flapjack Voice, Writer Brian Doyle-Murray Captain K'nuckles Voice Jeff Bennett Peppermint Larry, Hot Dog Vendor, Andrew No. 2, Scoops Pennington Voice Charles Shaughnessy Mr. Pants Guest Voice Roz Ryan Bubbie Voice Jackie Buscarino Ms. Leading Guest Voice, Writer Steve Little Kenny, Oarmaster Voice, Writer Daran Norris Andrew No. 1, Prince Guest Voice Kevin Michael Richardson Captain, Milos Guest Voice Sean Szeles Writer, Writer Somvilay Xayaphone Writer John Infantino Writer Cole Sanchez Writer J.G. Quintel Writer Kent Osborne Writer, Voice Director