Robin Williams

The Frog / Prince Robin

Teri Garr

Princess

René Auberjonois

King Ulrich

Candy Clark

Queen Gwynneth / Candy

Roberta Maxwell

Queen Beatrice / Griselda

Michael Richards

King Geoffrey

Donovan Scott

Hendrix / The French Chef

Van Dyke Parks

The Musician

Eric Idle

Narrator

Shelley Duvall

Self - Host (uncredited)