Casey Kasem
Shaggy Rogers (voice) (116 eps)
Don Messick
Scooby-Doo / Scrappy-Doo (voice) (116 eps)
Frank Welker
Fred Jones (voice) (28 eps)
Heather North
Daphne Blake (voice) (17 eps)
Lennie Weinrib
Scrappy-Doo (voice) (16 eps)
Patricia Stevens
Velma Dinkley (voice) (11 eps)
Marla Frumkin
Velma Dinkley (voice) (6 eps)
John Stephenson
Sylvester (5 eps)
Michael Bell
Eddie Drake / Sky Skeleton (3 eps)
Alan Oppenheimer
(voice) (3 eps)
Marilyn Schreffler
Amelia Parmer (3 eps)
Pat Fraley
Howard Gruger / Blue Scarab (2 eps)
Jack Angel
Brandon Davies (voice) (2 eps)
Stan Jones
Mr. Greenfield (2 eps)
William Callaway
Mr Pratt (2 eps)
Joan Gerber
(voice) (2 eps)
Ginny Tyler
Tessie (1 eps)
Louis Jourdan
Chuck (1 eps)
Marlene Aragon
Sally (1 eps)
Michael Rye
Crayton Aimes (voice) (1 eps)
William Woodson
Harrison Stone (voice) (1 eps)
Kenneth Mars
Director (1 eps)
Julie McWhirter
(voice) (1 eps)
Janet Waldo
(voice) (1 eps)
Scott Menville
(voice) (1 eps)
Peter Cullen
(voice: credit only) (1 eps)
Scatman Crothers
(voice) (1 eps)
Hamilton Camp
(voice) (1 eps)
Gay Autterson
(voice) (1 eps)
B.J. Ward
(voice) (1 eps)