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In their time, humans were capable of many great things, yes? They could level mountains, they could speak across oceans, they could fly, Noa, like eagles fly. But now… we will learn. Apes will learn. I will learn, from what is inside that vault.
Proximus Caesar explains his ambitions to Noa.[src]

Proximus Caesar was an evolved Bonobo who became the ruler of a coastal clan of apes in hopes of advancing his clan to gain access to remnants of human technology. He twisted Caesar's teachings and began conquering other ape clans to use as slave labor while hunting down humans, putting him into conflict with Noa and Mae.


Early Life

Proximus at some point in his past life, heard of the legend of the first evolved ape king, Caesar; came to admire him greatly and considered himself his representative; baptized himself "Proximus Caesar". However, he distorted Caesar's teachings; using them for his own benefit; he destroyed the learned members of the Order of Caesar; who preserved his teachings and his legacy (to prevent anyone from opposing his own twisted version), making them believe that he knew more about Caesar than anyone else. With his followers, including his loyal right-hand Sylva and Lightning, Proximus established his own kingdom; a Coastal Ape Colony, located on the western coast of North America; becoming a tyrannical ruler, carrying the symbol of Caesar, taken from the Order. Proximus had the ambition to acquire human technology in order to become as powerful as them in his epoch; became interested in a former military bunker located in the coastal region. In order to open it, Proximus sent his followers to attack and kidnap numerous ape clans, eliminating their leaders and assimilating the remaining members into his own kingdom, turning them into his slaves to expand the population of his kingdom; thus forming a great kingdom of apes of which he would be the only leader, taking the name of Caesar for himself. He puts the captured apes to work day after day, building more blockades for the dam and piling as many burning explosives as possible into the hatch to open the vault.

In addition to having his loyalists orchestrate raids on ape clans, he also ordered the hunting of humans, whether wild or not. On one occasion, his loyalists captured a human named Trevathan, who eventually became their inventor and taught Proximus about human history, particularly Ancient Rome. They also orchestrated a massacre of a human expedition; who sought to find the bunker, to access a decryption key to reestablish communication with the remaining human settlements in the world. In the aftermath of the massacre, only a young woman named Mae survived. Discovering this, with a map found on one of Mae's expedition companions, Proximus ordered his followers to find and capture her, convinced that she may be the key to gaining access to the stored weapons.

At another time, his guards attacked a village inhabited by Raka, one of the last elders who believed in Caesar's legacy and one of the last surviving members of the Order.

Kingdom of the Planet of the Apes

Proximus Caesar doesn't appear until the later half of the film, but he has a big role within the story. In the start of the film, he sends his henchmen Sylva and Lightning along with other members of his tribe to find the human Mae. His followers would eventually attack Noa's village, the Eagle Clan, capturing his people and killing his father Koro the leader, during a fight against Sylva.

Later, after Noa and Mae were found and captured by Sylva and Lightnin, and Raka died in a raging river; they are brought to the kingdom, Proximus Caesar oversees their arrival and emerges. Singing his usual quota and encouraging his subjects, he makes several of them try to open the vault door with explosives, despite his efforts to motivate them, they all end up trapped when the chains kill or injure them. Proximus, deeply disappointed, ordered his subjects to retreat, stating that they would become stronger tomorrow, and abandons his post. He later invites Noa to dinner with Mae and Trevathan, where he is impressed with the young ape's journey to his kingdom with Mae, and then explains his desires to descend into "evolution", thinking that humans did "many wonderful things" as flying like eagles or speaking across the oceans.

Proximus then torments Mae about his map leading to her kingdom, claiming that the vault already belongs to him, and then tells Noa that he is served by apes like him, wishing to know how to enter the vault. When Noa replies that she doesn't know how, since Mae never told him, he angrily attacks her before bringing Noa into his sight. He asks what he sees, Noa replies that they are "kidnapped clans", but Proximus tells him that they are part of his "kingdom", justifying that it is for them and that humans should never be trusted at all. Claiming that Mae has come to restore humanity's dominant role, Proximus declares to Noa his intentions to destroy the remaining humans before they come after him and his kingdom and put them in cages again.

In the morning, Proximus Caesar confronts Noa, Mae, Soona and Anaya after opening the vault door with Dar, Noa's mother, captive. He was impressed by her ingenious plan to enter the vault and in retrospect, and left amazed by the military tanks. While praising Noa for being a "useful ape", he berates him for not understanding the concept of never trusting a human, is unamused by his naivety, and has Lightning take Soona hostage. He then forced Noa to come to a conclusion of choosing between humans or apes, while preparing to kill Soona depending on Noa's response before provocatively challenging him to tear him apart. Everything stops when Mae uses a gun she took to save Soona by killing Lightning, while Proximus cowardly allows her to leave before asking if the vault had similar weapons. At the cost of that, Mae, ignoring Noa's pleas, set the charge explodes the dam, Proximus' first instinct was to save himself before drowning and at that moment, he pushed Sylva and a chimpanzee aside.


Having avoided drowning and reached the top of the mountain with the Eagle Clan, Proximus waited once Noa joins them, and proceeded to brutally beat him out of anger for destroying his kingdom. Soona, Dar and Anaya attempted to intervene, but Proximus roared at them to stay back as he continued to beat Noa and they could do nothing but watch the brutality. Proximus then prepared to force him to bow before killing the adolescent ape, and would force the clan to watch. Noa, however, musters the energy to sing the clan's song, which Proximus found amusing and believed Noa lost his mind. To his surprise, Anaya, Dar, Soona and the clan joined in, which unnerved the bonobo. He commanded they cease, but they didn't listen and Son-Eagle, Koro's bird, slashed Proximus' cheek and landed on Noa's arm. The enraged Proximus prepared to attack until he found himself overswarmed by the clan's eagles at their command, slashing and pecking into Proximus' flesh and forcing him to the ledge. A roaring Proximus looked at Noa, who commanded Son-Eagle to deliver the final blow, sending him over the ledge and fell into the ocean after the eagles ceased their attack. It is currently unknown if he survived the fall or not.


Proximus Caesar was a tyrant king who was an obsessive admirer of Caesar. He believed himself to be the next Caesar, hence his name 'Proximus Caesar'. But instead of being compassionate, peaceful and kind like his idol, his personality is closer to Koba's; he was ruthless, tyrannical and loved solving things with violence.

Cunning and charismatic, Proximus uses speeches to charm his followers into obedience, preferring to smooth talk them than outright abusing them once he has control, as a servant accidentally spilling a plate is met with just an impatient demand to depart rather than punishment. While happy to use them as cannon fodder, whether sacrificing one as a shield or not caring that Mae killed Lightning, his large ever expanding kingdom running smoothly is his main focus. After Lightning’s death Proximus is eager to learn where the rest of the guns are located, offering Mae safe passage in return for the information.

Despite his distrust of humans and his belief that apes are the superior species on the planet, Proximus secretly holds a deep admiration for certain aspects of humanity. He is willing to spare humans who prove to be useful, and surprisingly, he develops a peculiar friendship with Trevathan. Proximus never stoops to the level of murder to maintain his reign, opting instead for persuasive tactics such as smooth-talking, encouragement, and manipulating Caesar's beliefs and laws. These methods are employed to uplift the morale of his own forces.


  • Genius-Level Intellect: As a descendant of evolved apes, Proximus Caesar has a high level of intelligence.
  • Speech: Proximus Caesar is capable of speaking fluently.
  • Animal Strength: Great apes are very physically strong, easily powerful enough to beat a human to death.
  • Animal Speed: Like chimpanzees, a bonobo running on 4 limbs could outrun a world-class human sprinter with ease.
  • Animal Reflexes
  • Animal Stamina
  • Animal Endurance
  • Expert Hand-To-Hand Combatant: Despite his privileged position, Proximus was a capable fighter, dominating Noa in hand-to-hand combatant. His muscular build added to his abilities, he threw Noa several feet away twice during their brief fight.



  • Despite being a descendant of evolved apes, Proximus Caesar's sclera, the outer layer of the eyes surrounding the irises, are dark colored; a trait normal apes have in real life.
  • Even though he's the main antagonist, Proximus Caesar has less screen time than Sylva, the secondary antagonist.
  • Its possible Proximus is a descendant of a member of the San Francisco Ape Colony, which could explain his knowledge of Caesar.




Planet of the Apes - 20th Century Reboot Series
Planet of the Apes (CE) Movies
Rise of the Planet of the Apes | Dawn of the Planet of the Apes | War for the Planet of the Apes | Kingdom of the Planet of the Apes | Untitled fifth Planet of the Apes film
Main Evolved Ape Characters
Caesar | Bright Eyes | Koba | Maurice | Rocket | Buck | Cornelia | Blue Eyes | Luca | Ash | Cornelius | Winter | Lake | Bad Ape | Red | Noa | Soona | Anaya | Raka | Koro | Dar | Proximus Caesar | Sylva | Lightning
Supporting Ape Characters
Alpha | Burke | Verdon | Tinker | Grey | Stone | Andy | Wolfie | Jeanpierre | Lucky | Koba's Mother | Sparrow | Pope | Fifer | Cora | Rex | Bon | Dallas | Milo | Herman | Spear | Ajax | Oak | Fox | Aghoo | Ursus | Percy | Beardface | Armando | Luna | Oda | Rust
Main Human Characters
Will Rodman | Charles Rodman | Caroline Aranha | Robert Franklin | Steven Jacobs | Dodge Landon | John Landon | Douglas Hunsiker | Malcolm | Ellie | Alexander | Dreyfus | Carver | Foster | Colonel McCullough | Nova | Mae | Trevathan
Supporting Human Characters
Rodney | John Hamil | Rita | Sarah | Maddy | John | Edward | Roger Mason | Werner | Kemp | Clancy Stoppard | Corbin | Daniel Nygun | David Flynn | Finney | Kuo | Malakai Youmans | Max (Firestorm) | McVeigh | Terry | Roger | Rod Wilson | Preacher | Boyle | Lang | Travis | Korina
Rodman Family | Caesar's Family | Malcolm's Family | Rocket's Family | Dreyfus' Family
Horse | Elk | Grizzly Bear | Eagle | Zebra
Items / Weapons
Simian Flu
Important Events / Battles
Ape Rebellion | Human-Ape War | Simian Flu Pandemic | Battle on the Golden Gate Bridge | Battle in San Francisco | Battle of Muir Woods Park | Attack on Ape Waterfall | Battle of the Border
Organizations / Colonies / Companies
San Francisco Ape Colony | Caesar's Council of Apes | Caesar's Ape Army | Gen-Sys Board | San Francisco's Human Colony | Dreyfus' Human Army | Malcolm's Group | Alpha-Omega | Donkeys | Florida Ape Colony | Rocky Mountains Ape Colony | Eagle Clan | Coastal Ape Colony | Order of Caesar | Satellite Human Colony
West African Jungle | San Francisco | San Francisco Zoo | Gen-Sys Laboratories | Rodman House | San Bruno Primate Shelter | Golden Gate Bridge | Muir Woods Park | Ape Mountain | Ape Gate | Ape Village | Caesar's Home | Warehouse | Ape Waterfall | The Border | Oasis
Rise of the Planet of the Apes (webcomic) | Dawn of the Planet of the Apes: Contagion | Dawn of the Planet of the Apes (BOOM! Studios) | Before the Dawn | War for the Planet of the Apes (BOOM! Studios) | Planet of the Apes: The Time of Man | Planet of the Apes: The Simian Age | Planet of the Apes: Devolution
Dawn of the Planet of the Apes: Firestorm | Dawn of the Planet of the Apes - Official Movie Novelization | War for the Planet of the Apes: Revelations | War for the Planet of the Apes - Official Movie Novelization | Caesar’s Story
Other Books
Rise of the Planet of the Apes and Dawn of the Planet of the Apes: The Art of the Films
Rise of the Planet of the Apes (Soundtrack Album) | Dawn of the Planet of the Apes (Soundtrack Album) | War for the Planet of the Apes (Soundtrack Album) | Kingdom of the Planet of the Apes (Soundtrack Album)
Video Games
Plague Inc: Simian Flu | Planet of the Apes: Last Frontier | Crisis on the Planet of the Apes VR