Cornélius, a great chimpanzee scholar, was the fiancé of Zira, the chimp who had found an astonishing human called Ulysse Mérou, who could talk and claimed to be from another planet. Sympathising with the unusually intelligent human, they tried to integrate him into ape society, but he ultimately needed to return to his own planet, and so it was Cornélius that secretly arranged for Ulysse to return to his spacecraft.


  • The character "Doctor Cornelius" from the movie adaptation, Planet of the Apes, was based on Cornélius.
  • He is the only intelligent ape whose name does not begin with a z in Le planete de singes.

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