Characters played by Frank Welker
Dynomutt the Dog Wonder
Fred
Characters played by Gary Owens
Blue Falcon
Characters played by Casey Kasem
Shaggy
Shaggy Rogers
Swamp Rat
Characters played by Don Messick
Scooby Doo
Scooby-Doo
Characters played by Heather North
Daphne
Daphne Blake
Characters played by Henry Corden
Mr. Hyde
Characters played by Patricia Stevens
Velma
Characters played by Larry McCormick
[no data]
Characters played by Bob Holt
[no data]
Characters played by John Stephenson
[no data]
Characters played by Lennie Weinrib
[no data]
Characters played by Nicole Jaffe
Damsel Woman In Distress
Characters played by Julie McWhirter
[no data]
Characters played by Allan Melvin
Superthug
Characters played by Ralph James
Additional Voices
Characters played by Regis Cordic
Additional Voices
Characters played by Ron Feinberg
F.O.C.U.S. One
Narrator
Characters played by Joan Gerber
Additional Voices