| Mike Nelson? (155 episodes 1958-1961) | 劳埃德·布里吉斯
 | |
| Alfonso? (23 episodes 1958-1961) | Ken Drake | |
| Guard? (13 episodes 1958-1960) | Courtney Brown | |
| Betty Rainard? (10 episodes 1958-1961) | Jan Harrison | |
| Asst. DA? (9 episodes 1958-1960) | William Boyett | |
| Chief? (8 episodes 1958-1961) | Russ Conway | |
| Female Scuba Diver? (8 episodes 1958-1959) | Zale Parry | |
| Crew Member? (7 episodes 1958-1960) | Frank Warren | |
| Hoya - Saboteur? (7 episodes 1958-1960) | 伦纳德·尼莫伊
 | |
| Dick Talbot? (7 episodes 1958-1960) | Richard Probert | |
| Charlie Keller? (6 episodes 1959-1961) | John Zaremba | |
| Bartender? (6 episodes 1959-1960) | A.G. Vitanza | |
| USCG Lt. Dave Tulley? (6 episodes 1960-1961) | Ross Elliott | |
| Elias Storm? (5 episodes 1959) | Anthony George | |
| Ann Barry? (5 episodes 1959) | Lisa Gaye | |
| Caeser Franco? (5 episodes 1958-1961) | Rodolfo Hoyos Jr. | |
| Conrad Barnes? (5 episodes 1960-1961) | Ric Marlow | |
| Enemy Agent? (5 episodes 1958-1960) | Charles Maxwell | |
| Dr. Dick Baker? (5 episodes 1959-1961) | Wayne Mallory | |
| Guard? (5 episodes 1958-1959) | Paul Stader | |
