Guest Stars Michaela Dietz voices Darryl Sumalee Montano voices Mom Jordan Klepper voices Dad Lara Jill Miller voices Libby Eric Edelstein voices Geoff John DiMaggio voices Sir Alister Greg Baldwin voices Bartholomew Grey DeLisle Griffin voices Lucretia Kari Wahlgren voices Grimbella Trevor Devall voices Irving the Illusionist John DiMaggio voices Heidi Hairylegs Fred Tatasciore voices Bailiff Ghost Co Starring Rob Cantor voices Additional Voices Ashly Burch voices Additional Voices Sumalee Montano voices Additional Voices