UNDERNEATH THE PLANET THAT WENT APE

BENEATH THE PLANET OF THE APES (1970)
dir: Ted Post
James Fransiscus- Brent (Brunt)
Kim Hunter- Zira (Zora)
Maurice Evans- Dr. Zaius (Dr. Zaydius)
James Gregory- Ursus (Versus)
David Watson- Cornelius (Carnelius)

UNDERNEATH THE PLANET THAT WENT APE
MAD #157, March 1973
w: Arnie Kogen
a: Mort Drucker

From The Milking of the Planet that Went Ape. Up to then, Planet of the Apes and James Bond were the only two film franchises in existence. There had been things like Charlie Chan or Bulldog Drummond before that but not really on a big budget. MAD parodied all four (at that time) Planet of the Apes films in one seven-page article. This was their take on Beneath the Planet of the Apes. It was just these panels.

UPDATE:
UNDERNEATH THE PLANET OF THE APES
Cracked #90, January 1971
a: John Severin

Charlton Heston, star of the first one, dies right at the beginning of this one.

Nova (Linda Harrison), the woman on the horse, is mute throughout the whole film.

UPDATE 2:

BENEATH THE DIGNITY OF THE APES Blast #1, February 1971
w: Marv Wolfman
a: Berni Wrightson

All I'll say is they must have paid really well.

MAD's version didn't have Linda Harrison as Nova, which wasn't a speaking part, or Charlton Heston as Taylor.