<P> Between the first movie and its follow up, Beneath the Planet of the Apes, Cornelius and Zira first undergo a show trial for heresy at Zaius's instigation (who then pleads for clemency on their behalf), then are married and continue their careers . Another astronaut, Brent, appears at their doorstep in the second movie . Zira tends to a gunshot wound he suffered at a gorilla's hands, and Cornelius first shows Brent a map leading to where they left Taylor, then gives him the best possible advice: Never speak if he's captured, or "they will dissect you, and they will kill you--in that order ." Zaius also visits to announce that he's accompanying an expedition to the Forbidden Zone, and asks for Cornelius and Zira's promise not to cause trouble in his absence, which they give him . (In the novelization of the movie, though, they lead a chimpanzee revolt after he departs .) </P> <P> In the third movie, Escape from the Planet of the Apes, Cornelius and Zira themselves become astronauts, escaping their world in Taylor's spacecraft that was found and restored by their friend Dr. Milo, and traveling back in time to a few months after Taylor's departure . They discover a world run by humans, and deduce (correctly) that this is not only where Taylor came from, but is their own planet from the apes' prehistory . Cornelius has learned the truth about how the apes rose, from reading secret scrolls Dr. Zaius had kept under lock and key, and is able to answer questions put to him by the human leaders--and offer tantalizing clues to both Taylor's fate, and the planet's . </P> <P> Discovering Zira is pregnant by Cornelius, and fearing a possible ape takeover, scientist Dr. Otto Hasslein takes it upon himself to make sure the baby is never born, and the pair's arrival will not spark a human downfall--inadvertently setting that downfall in motion . Milo, the son of Cornelius and Zira, is born and taken into hiding, while the two try to escape with another ape baby as a decoy . They and the baby are murdered, but their own son (played in the next two movies, again by McDowall) grows up, given the name Caesar by his human foster - father, and leads the apes as the human society destroys itself . </P> <P> Cornelius and Zira have no roles in Conquest of the Planet of the Apes, except in references to Caesar's "real parents" and their prophecies of the origins of the ape takeover coming true, but appear in video stills examined by Caesar and two companions in the final film, Battle for the Planet of the Apes, as Caesar tries to learn what they knew about Earth's future . Caesar also gives his son--by wife Lisa--the name Cornelius, after his father . This Cornelius was killed by Aldo when he cut the branch on which Cornelius was . </P>

What is the monkeys name in planet of the apes