Matthew McConaugheyElvis (voice) / Executive Producer Kaitlin OlsonCeCe Ryder (voice) Johnny KnoxvilleBobby Ray (voice) Don CheadleThe Commander (voice) Jason MantzoukasHoward Hughes (voice) Priscilla PresleyPriscilla Presley (voice) / Executive Producer Ed HelmsRobert Goulet (voice) Chris ElliottTimothy Leary (voice) Christina HendricksRoxanne Ryder (voice) Fred ArmisenCharles Manson (voice) Baz LuhrmannThe Director (voice) Gary ColePresident Nixon (voice) George ClintonGeorge Clinton (voice) Simon PeggPaul McCartney (voice) Craig RobinsonJackie (voice) Kieran CulkinGabriel Wolf (voice) Mike ArnoldWriter / Executive Producer Matt RollerWriter / Co-Producer John EddieWriter / Executive Producer Mark GanekWriter / Co-Producer Asha Michelle WilsonWriter Matthew McConaugheyElvis (voice) / Executive Producer Kevin NoelExecutive Producer Jerry SchillingConsulting Producer Priscilla PresleyPriscilla Presley (voice) / Executive Producer Corey SalterExecutive Producer Seranie A. ManoogianProducer John VarvatosConsulting Producer Chris PrynoskiExecutive Producer Shannon PrynoskiExecutive Producer Ben KalinaExecutive Producer Antonio CanobbioExecutive Producer Marc RosenExecutive Producer Jason HammonsScript Coordinator Tim WilliamsOriginal Music Composer Tyler BatesOriginal Music Composer Jason FredericksonSound Effects Editor Mark Stephan KondrackiSupervising Dialogue Editor Kirk FurnissSound Effects Editor Andrew DowntonDialogue Editor Marcel DuperreaultSound Re-Recording Mixer Todd ArakiSound Effects Editor Jeff JackmanSound Effects Editor Joey CeeCasting Associate Dan ChristmanLine Producer Fletcher MoulesCo-Executive Producer Jennifer L. HughesProduction Manager Brandon WaltmanCompositing Supervisor Andre M. BarnwellLead Character Designer Robert ValleyCharacter Designer Cameron SquiresStory Editor 
