 | Don Messick | ... | Scoobert 'Scooby' Doo / ... (6 episodes, 1972) |

| Casey Kasem | ... | Norville 'Shaggy' Rogers / ... (6 episodes, 1972) |
 | Frank Welker | ... | Fred 'Freddy' Jones / ... (6 episodes, 1972) |
 | Heather North | ... | Daphne Blake (6 episodes, 1972) |
 | Nicole Jaffe | ... | Velma Dinkley / ... (6 episodes, 1972) |
 | Richard Elkins | ... | J.C. 'Gip' Gipson (3 episodes, 1972-1974) |
 | Stu Gilliam | ... | Freddie 'Curly' Neal (3 episodes, 1972-1974) |
 | Eddie 'Rochester' Anderson | ... | Bobby Joe 'B.J.' Mason (3 episodes, 1972-1973) |
 | Scatman Crothers | ... | George 'Meadowlark' Lemon (3 episodes, 1972-1973) |

| Robert DoQui | ... | Pablo Robertson (3 episodes, 1972-1973) |

| Johnny Williams | ... | Hubert 'Geese' Ausbie (3 episodes, 1972-1973) |
 | John Stephenson | | (2 episodes, 1972) |

| Daws Butler | | (2 episodes, 1972) |
 | Henry Corden | | (2 episodes, 1972-1974) |
 | Joan Gerber | | (2 episodes, 1972) |
 | Florence Halop | | (2 episodes, 1972) |
 | Larry Harmon | | (2 episodes, 1972) |
 | Pat Harrington Jr. | | (2 episodes, 1972) |
 | Ann Jillian | | (2 episodes, 1972) |
 | Ted Knight | | (2 episodes, 1972) |
 | Cindy Putnam | | (2 episodes, 1972) |
 | Mike Road | | (2 episodes, 1972) |
 | Olan Soule | | (2 episodes, 1972) |

| Vincent Van Patten | | (2 episodes, 1972) |
 | Lennie Weinrib | | (2 episodes, 1972) |

| Don Knotts | ... | Himself (2 episodes, 1972) |

| Larry Storch | ... | The Joker (2 episodes, 1972) |
 | Arlene Golonka | ... | Debbie (1 episode, 1973-1974) |

| Mark Hamill | ... | Corey Anders (1 episode, 1973-1974) |
 | Bob Hastings | ... | Henry Glopp (1 episode, 1973-1974) |
 | Julie McWhirter | ... | Jeannie (1 episode, 1973-1974) |
|
 | Benjamin Crothers | | (unknown episodes, 1973-1974) |
 | Jerry Dexter | | (unknown episodes, 1973-1974) |

| Jamie Farr | | (unknown episodes, 1973-1974) |
 | Jackie Joseph | | (unknown episodes, 1973-1974) |
 | Barbara Pariot | | (unknown episodes, 1973-1974) |
 | Jon Walmsley | | (unknown episodes, 1973-1974) |
 | Sherry Alberoni | | (unknown episodes) |
 | Janet Waldo | | (unknown episodes) |
|
| Edwin Aardal | .... | animator (2 episodes, 1972) |
| John Ahern | .... | layout artist (2 episodes, 1972) |
| Alvaro Arce | .... | layout artist (2 episodes, 1972) |
| Mike Arens | .... | layout artist (2 episodes, 1972) |
| Jayne Barbera | .... | ink and paint supervisor (2 episodes, 1972) |
| Oliver Callahan | .... | animator (2 episodes, 1972) |
| Lars Calonius | .... | animator (2 episodes, 1972) |
| George Cannata | .... | animator (2 episodes, 1972) |
| Rudy Cataldi | .... | animator (2 episodes, 1972) |
| Izzy Ellis | .... | animator (2 episodes, 1972) |
| Hugh Fraser | .... | animator (2 episodes, 1972) |
| John Garling | .... | animator (2 episodes, 1972) |
| Bob Goe | .... | animator (2 episodes, 1972) |
| Moe Gollub | .... | layout artist (2 episodes, 1972) |
| Ric Gonzales | .... | layout artist (2 episodes, 1972) |
| Fred Grable | .... | animator (2 episodes, 1972) |
| Paul Gruwell | .... | layout artist (2 episodes, 1972) |
| David High | .... | background artist (2 episodes, 1972) |
| Alex Ignatiev | .... | layout artist (2 episodes, 1972) |
| Ziggy Jablecki | .... | layout artist (2 episodes, 1972) |
| Raymond Jacobs | .... | layout artist (2 episodes, 1972) |
| Herb Johnson | .... | layout artist (2 episodes, 1972) |
| Herbert Johnson | .... | layout artist (2 episodes, 1972) |
| Bill Keil | .... | animator (2 episodes, 1972) |
| Bill Lignante | .... | layout artist (2 episodes, 1972) |
| Dick Lundy | .... | animator (2 episodes, 1972) |
| Fernando Montealegre | .... | background artist (2 episodes, 1972) |
| Gary Niblett | .... | background artist (2 episodes, 1972) |
| Charles A. Nichols | .... | animation director (2 episodes, 1972) |
| Joan Orbison | .... | animator (2 episodes, 1972) |
| Lew Ott | .... | layout artist (2 episodes, 1972) |
| Ed Parks | .... | animator (2 episodes, 1972) |
| Jay Sarbry | .... | animator (2 episodes, 1972) |
| Bob Singer | .... | layout artist (2 episodes, 1972) |
| Ken Southworth | .... | animator (2 episodes, 1972) |
| Irven Spence | .... | animator (2 episodes, 1972) |
| David Tendlar | .... | animator (2 episodes, 1972) |
| Carlo Vinci | .... | animator (2 episodes, 1972) |
| Robert 'Tiger' West | .... | xerographer (2 episodes, 1972) |
| Xenia | .... | animator (2 episodes, 1972) |
|
| Chebby Badham | .... | layout artist (unknown episodes) |
| Stuart Barry | .... | animator (unknown episodes) |
| Susan Beak | .... | animator (unknown episodes) |
| John Boersema | .... | animator (unknown episodes) |
| Andrea Bresciani | .... | animator (unknown episodes) |
| Zora Bubica | .... | ink and paint supervisor (unknown episodes) |
| John Burge | .... | animator (unknown episodes) |
| Gairden Cooke | .... | animator (unknown episodes) |
| Chris Cuddington | .... | animator (unknown episodes) |
| Milton Fredlund | .... | layout artist (unknown episodes) |
| Bill Getty | .... | xerographer (unknown episodes) |
| Warwick Gilbert | .... | animator (unknown episodes) |
| Sebastian Hurpia | .... | layout artist (unknown episodes) |
| Carmel Lennon | .... | animation checker (unknown episodes) |
| Stephen G. Lumley | .... | layout artist (unknown episodes) |
| Louise Luschwitz | .... | animation checker (unknown episodes) |
| Peter Luschwitz | .... | animation director (unknown episodes) |
| Don MacKinnon | .... | animator (unknown episodes) |
| Paul McAdam | .... | animator (unknown episodes) |
| Gus McLaren | .... | animator (unknown episodes) |
| Narell Nixon | .... | animation checker (unknown episodes) |
| Dick Olson | .... | xerographer (unknown episodes) |
| Romek Pachucki | .... | animator (unknown episodes) |
| Yvonne Pearsall | .... | animator (unknown episodes) |
| Jolawta Pillica | .... | animation checker (unknown episodes) |
| Kevin Roper | .... | animator (unknown episodes) |
| Kay Self | .... | animation checker (unknown episodes) |
| Laurie Sharpe | .... | animator (unknown episodes) |
| David Skinner | .... | layout artist (unknown episodes) |
| Robbert Smit | .... | animator (unknown episodes) |
| Sue Speer | .... | background artist (unknown episodes) |
| Gerald Wylie | .... | animator (unknown episodes) |
| Milan Zahorsky | .... | background artist (unknown episodes) |
| Olga Zahorsky | .... | xerographer (unknown episodes) |
| Richard Zaloudek | .... | background artist (unknown episodes) |
| |