Professor Bernard Quatermass (6 Episodes)

Dr. Matthew Roney (6 Episodes)

Captain Potter (6 Episodes)

Barbara Judd (6 Episodes)

Colonel James Breen (6 Episodes)

Sergeant (5 Episodes)

Corporal Gibson (5 Episodes)

First Private (5 Episodes)

Second Private (5 Episodes)

Private Secretary (3 Episodes)

James Fullalove (4 Episodes)

Sladden (4 Episodes)

Minister (2 Episodes)

Police Inspector (3 Episodes)

Private West (3 Episodes)

News Editor (3 Episodes)

Vicar (3 Episodes)