Guest Stars Michaela Dietz voices Darryl Sumalee Montano voices Mom Jordan Klepper voices Dad John DiMaggio voices Sir Alister Greg Baldwin voices Bartholomew Alan Lee voices Ollie Kari Wahlgren voices Grimbella Grey DeLisle Griffin voices Lucretia Sue Ann Pien voices June Leonard Wu voices Ruben Stephanie Sheh voices Esther John DiMaggio voices Heidi Hairylegs