Sir Issac Newton can't prove his law of gravity, so Mr. Peabody and Sherman travel to 1686, to make sure that Isaac Newton will have the iconic encounter with an apple that leads him to develop the Theory of Gravity.
William Conrad
Narrator (voice)
June Foray
Rocket J. Squirrel / Natasha Fatale (voice)
Bill Scott
Bullwinkle J. Moose (voice)
Paul Frees
Boris Badenov (voice)
Dorothy Scott
Annie Oakley (voice)
Edward Everett Horton
Fractured Fairy Tales Narrator (voice)
Walter Tetley
Sherman (voice)
Daws Butler
Junior (voice)
Charles Ruggles
Aesop (voice)
Charles Spidar
Various (voice)