Guest Stars Keith David voices The President Peter Serafinowicz voices Additional Voices Ice-T voices Magma-Q Co Starring Brandon Johnson voices Mr. Goldenfold Rob Schrab voices Additional Voices Nick Reczynski voices Additional Voices Ryan Ridley voices Additional Voices Troy Baker voices Additional Voices Gary Anthony Williams voices Additional Voices Albro Lundy voices Additional Voices Dan Harmon voices Water-T Debra Wilson voices Sinistar 7 Maya Tuttle voices Additional Voices Terry Ilous voices Additional Voices