Kadro (19)
John RobinsonProfessor Bernard QuatermassMonica GreyPaula Quatermass
Hugh GriffithDr Leo Pugh
John StoneCaptain John Dillon
Austin TrevorFowler
Roger DelgadoHugh Conrad
Rupert DaviesVincent Broadhead
Ian WilsonErnieMichael GoldenPaddyJohn RaeE.G. McLeod
Herbert LomasRobertHilda FenemoreMother
Melvyn HayesFrankie
Sydney BromleyFrankieStephen ScottGuardDenis McCarthyDoctor
Cyril ShapsControl AssistantDenton De GrayTechnician
Nigel KnealeNarrator (voice)