Casey Kasem

Shaggy (archive footage) (uncredited)

Sandy Duncan

Herself

Davy Jones

Himself

Tim Conway

Himself

Phyllis Diller

Herself

Jonathan Lipnicki

Himself

Tom Kenny

Mayor of Townsville / Top Cat (voice)

Jeff Bennett

Johnny Bravo (voice) (as Jeff Glen Bennett)

Ron McClary

Captain Linger (voice)

Don Knotts

Himself

Jonathan Winters

Himself

Robin Williams

Himself

Arthur Anderson

Eustace Bain (voice)

Doug Preis

Thundarr the Barbarian (voice)

Janet Waldo

Judy Jetson (voice)

Thea White

Muriel Bain (voice)

B.J. Ward

Betty Rubble (voice) (as BJ Ward)

Jennifer Martin

Miss Sara Bellum (voice)

Charlie Adler

Big Red Guy / Chicken (voice) (as Charles Adler)

Grey DeLisle

Daphne Blake (voice)