| 角色 | 饰演者介绍 |
| Scooby Doo (25 episodes 1969-1970) | Don Messick |
| Shaggy (25 episodes 1969-1970) | Casey Kasem |
| Velma (25 episodes 1969-1970) | Nicole Jaffe |
| Fred (25 episodes 1969-1970) | 弗兰克·维尔克 |
| Daphne (17 episodes 1969-1970) | Stefanianna Christopherson |
| Daphne (8 episodes 1970) | Heather North |
| Additional Voices? (7 episodes 1969-1970) | John Stephenson |
| Additional Voices? (6 episodes 1969) | Hal Smith |
| Additional Voices? (6 episodes 1969) | Jean Vander Pyl |
| Additional Voices (5 episodes 1969) | Vic Perrin |
| Additional Voices (unknown episodes) | Barry Richards |
| Additional Voices (unknown episodes) | George A. Robertson |
| Additional Voices (unknown episodes) | Susan Steward |
