Main Characters John Fleming 7 main appearances Judy Adamson 7 main appearances Professor Reinhart 7 main appearances Andromeda 6 main appearances J.M.Osborne 6 main appearances Madeline Dawnay 4 main appearances Kaufman 4 main appearances Dennis Bridger 3 main appearances
Recurring Guest Characters General Vandenberg 5 guest appearances Doctor Geers 4 guest appearances Harvey 3 guest appearances Egon 3 guest appearances Harries 2 guest appearances Corporal 2 guest appearances Major Quadring 2 guest appearances Doctor Hunter 2 guest appearances The Prime Minister 2 guest appearances Whelan 1 guest appearances Grace 1 guest appearances Jenkins 1 guest appearances Commissionaire 1 guest appearances Captain Lovell 1 guest appearances Mrs. Tate-Allan 1 guest appearances Air Commodore Watling 1 guest appearances Lieutenant de Felice 1 guest appearances Minister of Defence Burdett 1 guest appearances Cluton-Danvers 1 guest appearances Minister of Science Ratcliff 1 guest appearances