Guest Stars Keith Ferguson voices Flintheart Glomgold Jim Rash voices Gyro Gearloose Kimiko Glenn voices Lena Marc Evan Jackson voices Bradford Buzzard Lin-Manuel Miranda voices Fenton Crackshell-Cabrera / Gizmoduck Catherine Tate voices Magica De Spell Margo Martindale voices Ma Beagle David Kaye voices Duckworth Libe Barer voices Violet Sabrewing Julie Bowen voices Penumbra April Winchell voices Black Heron Paul F. Tompkins voices Gladstone Gander Eric Bauza voices Beagle Boys Chris Diamantopoulos voices Storkules Keith Ferguson voices Johnny Jameela Jamil voices Gandra Dee April Winchell voices Eggheads Chris Diamantopoulos voices Drake Mallard/Darkwing Duck Chris Diamantopoulos voices Eggheads Keith Ferguson voices Eggheads Jaime Camil voices Don Karnage Corey Burton voices Ludwig Von Drake John Hodgman voices John Rockerduck Keith Ferguson voices Randy Giancarlo Esposito voices Phantom Blot Jason Mantzoukas voices Steelbeak Amy Sedaris voices Pepper Tom Kenny voices Cousin Fethry Tress MacNeille voices Daisy Duck Corey Burton voices Rescue Rangers April Winchell voices Rescue Rangers Arturo Del Puerto voices Panchito Pistoles Jaleel White voices Gene The Genie Bernardo de Paula voices José Carioca Noah Baird voices B.O.Y.D. Stephanie Beatriz voices Gosalyn Waddlemeyer Retta voices Harp Keith Ferguson voices Frankenjeeves Keith David voices Manny Riki Lindhome voices May Tom Kenny voices Egghead Stiv Jim Rash voices Gizmoduck Armor Noël Wells voices June