Guest Stars Michaela Dietz voices Darryl Sumalee Montano voices Mom Jordan Klepper voices Dad Lara Jill Miller voices Libby Eric Edelstein voices Geoff Sumalee Montano voices Grandma Nin John DiMaggio voices Sir Alister Greg Baldwin voices Bartholomew Aparna Nancherla voices Sheela Grey DeLisle Griffin voices Lucretia Kari Wahlgren voices Grimbella Diedrich Bader voices Mr. Bates Chris Diamantopoulos voices Tug Co Starring John DiMaggio voices Additional Voices Ashly Burch voices Additional Voices Grey DeLisle Griffin voices Additional Voices Sumalee Montano voices Additional Voices Diedrich Bader voices Additional Voices Greg Baldwin voices Additional Voices