| Name | Character | Episodes |
|---|---|---|
| Clifford Rose | Ludwig Kessler | 6 |
| Alan Dobie | Richard Bauer | 6 |
| Nitza Shaul | Mical Rak | 6 |
| Robert Morris | Karl Leider | 3 |
| Harold Innocent | Deakin | 3 |
| Guy Rolfe | Yqueras | 3 |
| Jerome Willis | Hugo Van Eyck | 2 |
| Royston Tickner | Maurer | 2 |
| Oscar Quitak | Josef Mengele | 2 |
| Gareth Milne | Muller | 1 |
| Terence Conoley | Neumann | 1 |
| John Rolfe | Inspector | 1 |
| Juliet Hammond-Hill | Natalie Chantrens | 1 |
| Angela Richards | Monique Durnford | 1 |
| Richard Wren | Vinding | 1 |
| Richard Rees | Brazilian | 1 |
| Anthony Gardner | Smithson | 1 |
| Bernard Hepton | Albert Foiret | 1 |