Shaggy Rogers (voice)
Casey Kasem
Scooby-Doo / Scrappy-Doo (voice)
Don Messick
Ghostly Laugh (uncredited voice)
Hamilton Camp
Witch (uncredited voice)
June Foray
Shreako / Dispatcher (voice)
Rob Paulsen
Freako / Demonstrator Ghost (voice)
Ronnie Schell
Meako (voice)
Jerry Houser
Sheriff Rufus Buzby / T.J. Buzby (voice)
Sorrell Booke
Farquard / Skull Ghost (voice)
Arte Johnson
Billy Bob Scroggins / Beaureguard / Horseman / Ape (voice)
William Callaway
Sadie Mae Scroggins (voice)
Victoria Carroll
Mayor (voice)
Michael Rye
Executive Producer
William Hanna
Songs
Character Designer
Jim Stenstrum
Director
Ray Patterson
Animation Director
Casting
Andrea Romano
Joseph Barbera
Paul Sommer
Carl Urbano
Writer
Jim Ryan
Producer
Kay Wright
Editor
Robert Ciaglia
Gil Iverson
James T. Walker
Donna Zeller
Animation
Don Lusk
Bill Justice
Don Patterson
Original Music Composer
Sven Libaek