 Casey KasemShaggy Rogers (voice) | Shaggy Rogers (voice) |
 Don MessickScooby-Doo (voice) | Scooby-Doo (voice) |
 Frank WelkerFred Jones (voice) | Fred Jones (voice) |
 Heather NorthDaphne Blake (voice) | Daphne Blake (voice) |
 Patricia StevensVelma Dinkley (voice) | Velma Dinkley (voice) |
| GGinny McSwainKerry / Girl Fan / Executive Secretary (voice) | Kerry / Girl Fan / Executive Secretary (voice) |
 Marilyn SchrefflerCherie / Sis / Receptionist (voice) | Cherie / Sis / Receptionist (voice) |
 Joan GerberLavonne / Second Woman / Waitress (voice) | Lavonne / Second Woman / Waitress (voice) |
 Rip TaylorC.J. (voice) | C.J. (voice) |
 Michael BellJesse Rotten / V.P. Jackie Carlson (voice) | Jesse Rotten / V.P. Jackie Carlson (voice) |
 Stan JonesDirector / First V.P. / Terrier (voice) | Director / First V.P. / Terrier (voice) |
 Pat FraleyBrother / Guard / Announcer (voice) | Brother / Guard / Announcer (voice) |
| EEdie Lehmann BoddickerSinger (voice) | Singer (voice) |
| PPaul DeKorteSinger (voice) | Singer (voice) |
| MMichael RedmanSinger (voice) | Singer (voice) |
| DDebbie HallSinger (voice) | Singer (voice) |
| RRobert TebowSinger (voice) | Singer (voice) |
