| 角色 | 演員 | 備註 |
| David Callan (43 episodes, 1967-1972) | 愛德華·伍德華德（Edward Woodward） | |
| Lonely (41 episodes, 1967-1972) | Russell Hunter | |
| Liz March (31 episodes, 1967-1972) | Lisa Langdon | |
| Toby Meres (30 episodes, 1967-1972) | Anthony Valentine | |
| Hunter #4 (19 episodes, 1970-1972) | William Squire | |
| James Cross (14 episodes, 1970-1972) | Patrick Mower | |
| Bishop (10 episodes, 1970-1972) | 傑弗里·蔡特（Geoffrey Chater） | |
| Hunter #1 (9 episodes, 1967-1972) | Ronald Radd | |
| Hunter #3 (9 episodes, 1969) | Derek Bond | |
| Dr. Snell (5 episodes, 1969-1972) | Clifford Rose | |
| Stafford (5 episodes, 1972) | Paul Williamson | |
| Hunter #2 (5 episodes, 1969) | Michael Goodliffe | |
| Richmond (4 episodes, 1972) | T.P. McKenna | |
| Judd (3 episodes, 1969-1970) | Harry Towb | |
| Sir John Harvey (3 episodes, 1969) | John Wentworth | |
| Flo Mayhew (2 episodes, 1972) | Sarah Lawson | |
| Horst (2 episodes, 1969-1972) | Peter Blythe | |
| Radio Announcer (2 episodes, 1970-1972) | Peter Beton | |
| Detective Sergeant (2 episodes, 1970-1972) | Frank Coda | |
| Harris (2 episodes, 1969-1972) | David Hargreaves | |
| Lonely's Auntie (2 episodes, 1970-1972) | Queenie Watts | |
| Girl on Bus (2 episodes, 1970-1972) | Cheryl Hall | |
| Burov (2 episodes, 1969-1972) | Morris Perry | |
| Dodds (2 episodes, 1969-1970) | Dennis Thorne | |
| Truman (2 episodes, 1969) | Douglas Fielding | |
| Henry Thackery (2 episodes, 1969-1972) | Jonathan Newth | |
| Geoffrey Gleeson (2 episodes, 1969-1970) | Alan Cullen | |
| Freddie (2 episodes, 1969-1970) | Harold Innocent | |
| Archivist (2 episodes, 1969-1970) | Michael Hall | |
| Robert E. Lee (2 episodes, 1967-1969) | 郭弼（Burt Kwouk） | |
| Blair (2 episodes, 1967-1969) | Bruce Purchase | |
