Orangutan minister and chief scientist who opposes Taylor in the original film
Brent's group clashes with Zaius over humanity, violence, and the bomb.
Dr. Zaius refuses to listen to Taylor's warning and later condemns humanity's violence while the apes attack the underground city.
Taylor's final confrontation with Zaius centers on preventing planetary destruction.
Taylor pleads to Zaius to prevent the weapon's activation, but Zaius refuses to listen and condemns humanity.
Ursus and Zaius disagree over military expansion into the Forbidden Zone.
Ursus leads a rally to conquer the Forbidden Zone, while Dr. Zaius objects to the ape invasion.
Mendez's defenders and Zaius's forces oppose each other during the invasion.
The telepaths use illusions against the advancing apes, but Zaius sees through them as the invasion continues.
Explore the full interactive character relationship map of Beneath the Planet of the Apes
Related entry on Wikidata (Q2058388), public domain (CC0).