Special Guest Stars Krysten Ritter voices Sheila Redfield Seth Green voices Mav Redfield Nicholas Braun voices Greg Hirsch Paul F. Tompkins voices Colby Redfield Edi Patterson voices Jessica John Lithgow voices Augustus Redfield Susan Egan voices Singing Tree Charli D'Amelio voices Herself Guest Stars Tress MacNeille voices Angela Merkel Chris Edgerly voices Gus Employee Pamela Hayden voices Me and the Space Clown Kid