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I love you, son.
Caesar and Cornelius reunited.

Cornelius was an evolved chimpanzee, the youngest son of the late Caesar and the late Cornelia, and the younger brother of the late Blue Eyes. Through his father, Cornelius was the youngest grandson of the late Bright Eyes and the late Alpha. He was second-in-line to inherit the colony after his older brother.

Following the deaths of Cornelius' parents, Caesar and Cornelia, and his brother, Blue Eyes, he was now the sole heir to Caesar's throne.


Dawn of the Planet of the Apes

One day following the decade the apes left the city and thrived in the Muir Woods, Caesar returned home from a hunt to learn his wife Cornelia was in labor. Caesar rushed to his tree just in time to be by Cornelia's side as she gave birth, which came with complications, unlike Blue Eyes' birth, to their newborn baby boy. The baby, later named Cornelius, cried as he gasped his first breath and was placed in his mother's arms. His father and mother gazed at him with happiness, then turned to see his elder brother, who was scarred by a wild bear, enter the tree to see his newborn brother as their parents continued to touch Cornelius so he could know they were his parents.

As a newborn, Cornelius slept most of the time with his mother, who was developing complications after childbirth. One day, Cornelius and his mother were sleeping when a gunshot was heard throughout the forest, waking up Caesar, who investigated with a large troop of apes and discovered a group of humans standing in front of Blue Eyes and Ash, Rocket's son, who the latter was shot by one of the humans.

The next night, after Caesar made a deal with the group of humans, consisting of Malcolm, Ellie, Alexander, Carver, Foster, and Kemp, he returned and saw Cornelius sleeping while Cornelia was breathing heavily, which worried Caesar, but she assured him that she just needed to rest. Caesar then looked at Cornelius because he was worried that the humans' presence could put him and the tribe in danger, which Cornelia understood.

At dawn, Caesar and Blue Eyes took Cornelius, so Cornelia could rest and arrived at the site of the hydroelectric dam as Malcolm's group began their work to fix it and restore power to the ruins of San Francisco. Along with Rocket and the orangutan Maurice, Caesar and Blue-Eyes, who was holding Cornelius, stood guard until Caesar noticed that the bonobo, Koba was not present. Cornelius, fully awake, took in his surroundings while in his brother's arms.

During their work, Malcolm's group detonated an explosive to clear the inside of the dam, which trapped them at the same time. Rocket, Ash, and a gorilla, named Luca enter the dam and save them, taking them outside so Ellie can treat Carver and the rest can clean themselves of the dirt. Cornelius was intrigued by the humans' presence and jumped out of his brother's arms while Malcolm thanked Caesar and explained what else his group should do. Cornelius climbed up Ellie's back to get a better look at them before moving in front of Alexander's knee. He looked at both Ellie and Alexander who began to connect with the young ape until he lowered himself to the ground and examined Alexander's shoe before heading to an open case. While rummaging through the contents of the case, he discovered a shotgun, which Carver kept hidden since the agreement between Malcolm and Caesar was that the group could stay if they surrendered all the weapons they had. Carver, who saw Cornelius, jumped up and yelled at him to get off the case, angering Blue Eyes and forcing him to attack the human. Cornelius got off the case and ran for cover while Blue Eyes held off Foster and Kemp as they tried to take out Carver, who took the gun and pointed it at Blue Eyes, surprising everyone until Caesar disarmed Carver. Sensing his unintentional deception, Caesar threw the weapon into the lake and grabbed Cornelius as he ran towards his father, who yelled at Malcolm to leave.

Returning to their village, Caesar and Blue-Eyes were approached by a panicked Sparrow, one of Cornelia's midwives, who revealed that Cornelia had taken a turn for the worse. Caesar and Blue Eyes, holding a sleeping Cornelius, ran to their tree to see Tinker and a midwife at Cornelia's side, whose breathing worsened and she became unresponsive. Both Cornelius' father and brother stood by Cornelia until Rocket mentioned Malcolm and Ellie, who apologized and made a new agreement: Ellie would help Cornelia with antibiotics and Caesar would allow Malcolm's group to stay, but for a day and Carver being taken out of the forest and away from the apes while they help Malcolm's group repair the dam, angering Cornelius' brother.

The next night, Cornelius's mother made a full recovery and emerged from Caesar's tree with Cornelius in her arms. Caesar, who allowed Malcolm's group, excluding Carver, to enter their village and watch the city lights come back on when they fixed the dam and restored power, approached her and they hugged before leading her little son to look at the lights. Standing near a cliff in the right corner of the tree roots, Cornelius stayed with his mother as she made her way towards Blue Eyes, who hugged her happy to see her okay until Caesar was shot by Koba lurking in the darkness after being humiliated by Caesar and deemed to care more about humans than his kind, he fell off the cliff. Cornelius was startled when Cornelia and Blue-Eyes called out to Caesar, and then the entire village started burning, which was secretly caused by Stone. After Koba came and lied that the humans killed Caesar and set fire to the village, he declared war on the humans in the city but decreed that the child and female apes stay in the forest while the men headed to the forest city.

Two nights later, Cornelius and Cornelia headed to the city when Koba summoned them. At dawn, all the women and children arrived at the colony, an unfinished building where the surviving humans lived, and learned that some apes died from an explosive set off by the colony's leader. Blue Eyes found the sleeping Cornelius and his mother and brought them to Caesar, who survived Koba's attempt. Cornelius's father, mother, and brother embraced each other before Caesar reasserted his dominance over the tribe and made preparations for war while Malcolm informed Caesar that a military group was coming to San Francisco.

War for the Planet of the Apes

Cornelius, now two years old, has learned the concept of war as his tribe fought with Alpha-Omega for the past two years while seeking refuge in a secret cave system hidden in a waterfall. One day, when his father was returning home with a troop of injured apes, Cornelius was walking with his mother Cornelia, who was surprised and happy to see Blue Eyes and Rocket, who had returned from their trip to find a new home for the tribe. As Cornelia hugged her eldest son, Cornelius ran to his father, grabbing his hand as he did not remember his brother due to his absence for two years, and hesitated to greet him when Blue Eyes turned to greet him. His mother helps Cornelius remember Blue Eyes as Caesar picks him up and cradles him, allowing Cornelius to nervously wave at his estranged brother before his mother directs Blue Eyes toward his wife Lake. As Blue Eyes and Lake hug each other, Cornelius watches his father cradle his mother as both parents are happy to see their son return safely.

At night, Cornelius stayed with his mother while she participated in a council with his father, Blue Eyes, Lake, Rocket, Spear, the orangutans Maurice and Percy, and the gorillas Luca and Winter, the only albino in the tribe. Cornelius curiously examined a map his older brother presented to him as he explained that it led to their new home: an untouched oasis hidden by a mountain range. Cornelius was then dragged back near his mother before she asked Blue Eyes what was beyond the mountains as Cornelius grabbed her leg. Blue Eyes grabbed one of Rocket's satchels and pulled out sand, which Cornelius attempted to take some from Lake's hand, and Blue Eyes revealed that a vast desert lies beyond the mountains, which serves as the perfect cover to prevent humans looking for the tribe there. Cornelius then fell asleep while Winter argued for the tribe to leave tonight, but Caesar and Blue Eyes decreed that they were not ready and that moving now would put the entire tribe in danger, and Caesar assured all the apes that they would leave the tribe forest safe and sound as long as they stay together.

Later that night, Cornelius, sleeping with his mother and brother while his father stayed up to examine the map, hooted in his sleep, causing Caesar to rub his sleeping son's head. Cornelius and Cornelia were awakened by their brother, who revealed to them that danger had arrived. Cornelius and his mother were behind Blue Eyes when he saw a female soldier emerging from a cavern beneath her nest. Cornelia kept Cornelius crouched as the soldier made his way around the rock pillar supporting her nest, leaving her exposed for Blue-Eyes to knock her to the ground before beating her to death while Cornelia hid Cornelius in a deep hiding place at the base of the pillar of rock in the back. As he stood still, Cornelius watched in horror as gunshots exploded at the base of the large cavern, followed by his brother and mother falling near the body of the female soldier, both dead, traumatizing the young ape. Horrified, Cornelius stood still as the killer radioed that the ape leader was dead, and Cornelius did nothing to see what happened next: unbeknownst to him, his father returned to the opening to see the killer, Colonel McCullough, preparing to leave and his wife and eldest son dead, angering Caesar to go after the killer, followed by more apes emerging from one of the tunnels.

As the group of apes, with Luca, Spear, Rocket, and Maurice set off in search of Cornelius, who, for them, was unaccounted for, leaving Caesar devastated looking at the scene of his family's death. Hearing his father breathe angrily, Cornelius decided to reveal himself, to which his father was relieved to see him alive and opened his arms, and Cornelius ran to him and hugged him, crying in sadness as Caesar assured him that he was safe.

In the morning, Cornelius walked with his father among the tribe, who were preparing to leave because their refuge was compromised, on the shore of the lake. Caesar approached a distraught Lake and tasked her with taking care of Cornelius because he was not traveling with the tribe to the oasis. Cornelius whines to his father not to leave but decides to obey his father as he walks to Lake's side. He then saw Maurice talking to Caesar, who he realized was going after the soldiers, but Caesar revealed that he would go after the colonel to kill him, and Maurice told Caesar that the tribe couldn't leave without him. Caesar told Maurice that they had to do it because the soldiers could return in full force. Cornelius, crying, called out to his father as Lake tried to calm him down; Caesar then revealed that he planned to divert the soldiers, leaving the entire tribe a chance to leave the forest before leaving. Cornelius cries with the tribe when Caesar disappears into the forest, followed by Maurice, Luca, and Rocket who decide to accompany him.

To their horror, as they left the forest, the tribe was intercepted by Alpha-Omega and were prepared to kill the apes until the Colonel stopped them and made all the apes return to their base on the northern California border. Once the tribe was brought to the Alpha-Omega base, a former weapons silo that was turned into a relocation facility during the Simian Flu Pandemic. Cornelius and the other ape children were separated from the adult apes when they were forced to build a wall. Days later, Cornelius was shocked to see his father, who found the Colonel's base, and was horrified to see that his tribe had been captured, led to the pin of adult apes chained by the Colonel himself, a soldier, and a Donkey. Cornelius called his father, which caught the colonel's attention, who did not know that Caesar still had one more son. Caesar showed no recognition to his son as he wanted to protect him from death and the colonel overruled him and had the soldier and the Donkey place Caesar on the pin. After they left, Cornelius cried and called out to his father, trying to reach him through the bars.

For the next three days, Cornelius and the other children watched as the soldiers and Donkeys terrorized the adults and forced them to work, until one day Caesar, Rocket, and Maurice, who were hiding outside the base, devised a plan to free the apes and abandon the base, as Caesar discovers that an army from the north is coming to fight Alpha-Omega. On the third night, Caesar and Rocket managed to acquire the key to the pins and slip into the children's pin, as the tunnel they dug underneath began to flood and began to bring them together. When Cornelius woke up, he turned around and saw his father, bruised and scarred, standing and hugged him, happy to be reunited with him. Caesar and Rocket guide the ape children to climb the wires above the pins, high enough from the soldiers' sights, and jump towards the adult pins, with Cornelius clinging to his father's back while he and Rocket returned to the adults' pin and made a hole in the ground. Cornelius was the first to be saved by Maurice, who was assisted by a mute human girl and a talking chimpanzee and led him through a tunnel beneath the base and outside.

As most of the children were led into the forest near the base, the northern army arrived and opened fire on the base. As dawn approached, Cornelius, with Lake, Maurice, and a mute human girl named Nova, watched as the opposing human armies massacred each other until the base exploded, allowing the northern army to infiltrate the base. Cornelius wondered where his father was until Maurice, who noticed an avalanche caused by the explosion, ordered him and all the ape children to climb the trees. Clinging to a tree with Lake, Cornelius braved the avalanche until it stopped, burying the entire base and killing both the Northern Army and the surviving Alpha-Omega. Cornelius turned towards Rocket's hooting to see his father alive and hanging from a tree, who was also relieved and happy to see the remaining members of his tribe alive.

Days after the tribe left the base and resumed their journey, Cornelius, in his father's arms, witnessed the oasis and all the children and adult apes began walking towards it. Cornelius saw Nova, who looked at him, and hid nervously next to her father until he gestured for him to come to her, which he did and walked with her and the talking chimpanzee Bad Ape, who joined him they. Cornelius then grew fond of them and played, looking at his father happily and continuing to play, unaware that his father was dying from a fatal wound and was not aware when the tribe became aware of his passing by Maurice's cries.

Kingdom of the Planet of the Apes

Cornelius was seen in the flashback at his late father's funeral, along with Lake, Maurice, Rocket, and the other colony members. After Caesar's body was cremated, he stood beside Lake as they watched Maurice, Rocket, and the apes sign "Apes Together Strong," while his father's ashes scattered into the air.


After Cornelius' father, Caesar had passed away, Maurice, Rocket and Lake had assisted Cornelius in preserving his father's teachings and established laws so that; he could understand the impact his father had on him, his people, as well as his family and friends. As he matured, Cornelius eventually assumed his father's position as the new king of the San Francisco Ape Colony, upholding his family's legacy; until his own passing.

It is unknown; whether or not; if there are any other living descendants of Cornelius; but it is very likely that; he had a child or children who had continued Cornelius' bloodline for the next 300 years, therefore; it is possible that; Cornelius still has living descendants; by the year 2328.


Cornelius, as a baby, is closely monitored by his family, particularly his protective older brother, Blue Eyes. Despite the watchful eye of his family, Cornelius still manages to explore and satisfy his curiosity. When his father saves Malcolm, his family, and Carver from an explosion, Cornelius and Blue Eyes are there when Caesar, along with their honorary uncles, Maurice and Rocket, meet up with the humans. Cornelius becomes intrigued and ventures over to Ellie and Alexander to investigate them for himself, but he discovers something even more interesting: the humans' box of supplies. Cornelius is nearly injured, but Blue Eyes comes to his rescue, attacking Carver for trying to harm his brother.

As a two-year-old, Cornelius has outgrown his curious nature from infancy and has become timid and shy. This is evident when he holds Cornelia or Caesar's hand while walking. He even appeared shy around his older brother Blue Eyes due to his absence during the war against Alpha-Omega. Despite his hesitance, Cornelius was able to warm up and remember his brother again, partly due to the support of his parents.

Following the passing of his mother and brother, Cornelius relied heavily on his father, as shown by his frequent calls to him, as well as to Lake, his brother's widow who took care of the younger apes. Despite his initial shyness towards strangers, Cornelius can eventually open up and form friendships with new individuals, such as Nova and Bad Ape.

Physical Appearance

Cornelius resembled a typical chimpanzee infant, with black fur and tan skin, no teeth, and a combination of his parents' facial features. He inherited his mother's trait of having a part in his hair on top of his head, as well as his parents' green eyes. By the age of two, Cornelius' hair had become slightly lighter than his parents' and he had grown to the average height of a juvenile chimp.


  • Genius-Level Intellect: Due to being an evolved ape; Cornelius was a highly intelligent; because his parents, Caesar and Cornelia had inhaled the ALZ-113 early in their life, Cornelius had a higher level of intelligence than both of his parents combined. Cornelius, along; with his older brother, Blue Eyes; was the most intelligent ape in the entire San Francisco Ape Colony.
  • Speech: Due to being an evolved ape; Cornelius was capable of speech; but; he only spoke through the use of sign language; due to his young age at the time. it can be assumed that; Cornelius' english and sentences had greatly improved (off-screen); by the time that; he had reached adulthood.
  • Sign Language: Due to the fact that; Cornelius was taught; by his parents, Caesar and Cornelia, and his honorary uncle, Maurice respectively; he was highly skilled in the art of sign language; for example, he used it as a way to communicate; with other apes; who could not speak or have limited verbal speech.



  • Like Cornelius parents, Caesar and Cornelia; but unlike his older brother, Blue Eyes; he had green colored eyes.
  • Cornelius and Blue Eyes do not seem to possess the shooting star birthmark their father, Caesar and their paternal grandfather, Alpha had.




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
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