Cylon History

For information on the Original Series Cylons, see Cylons (TOS).

Part of the series on The Cylons (Re-imagined Series)

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More than fifty-eight years before the destruction of the Twelve Worlds, the humans of the Colonies created the Cylons, a race of sentient machines. However, over two thousand years before that, ancient Cylons existed on Earth, and on Kobol more than two thousand years before that.

Ancient Cylons

Kobol, the birthplace of humanity and the Cylons.

According to the Sacred Scrolls, man lived alongside the Gods in the birthplace place of humanity - the planet Kobol. In truth, humanity lived alongside its creation, the Cylons - a race of sentient machiness that, over time, evolved into humanoid form. Though these humanoid Cylons were indistinguishable from their human creators, they were unable to procreate, instead relying on organic memory transfer to download their consciousness into new bodies after death (TRS: Miniseries, "Kobol's Last Gleaming", "Revelations", "Sometimes a Great Notion", "No Exit").

Though in the ancient texts, Kobol was described as paradise, war and human sacrifice - either figurative or literal - plagued the planet. Humanity and the Cylons also came into conflict, forcing the humanoid Cylons to flee Kobol and travel to the distant planet Earth where they settled (TRS: "Valley of Darkness", "No Exit").

Two thousand years later, the human inhabitants of Kobol abandoned their world and journeyed to the Twelve Worlds, where the Twelve Tribes settled colonies. Over time the memory of what happened on Kobol faded, passing into cryptic legends portrayed in the Colonials' Sacred Scrolls, which referred to the Cylons only as a "Thirteenth Tribe" (TRS: Miniseries, "Kobol's Last Gleaming", "Revelations", "Sometimes a Great Notion", "No Exit").

Ronald D. Moore, creator and executive producer of Battlestar Galactica, explained the creation myth of Kobol in an interview. Describing the overall concept behind the exodus of man from Kobol by comparing it the mythological story of Prometheus, saying "Kobol, once upon a time, [was where] man and the gods lived as one. Man stole fire from the gods, which in our case was the secret of AI or artificial intelligence."[1]

Earth

An ancient Cylon Centurion discovered on Earth, 2,000 years after its obliteration by war.

On Earth, the Thirteenth Tribe prospered, building a new civilization and a modern age of technology. Moving beyond their original limitations, the Cylons of Earth were finally able to reproduce and memory transfer and resurrection technology were abandoned and forgotten. As civilization on Earth continued to grow, a new race of mechanical Cylons were created, ancient versions of the Cylon Centurions (TRS: "Sometimes a Great Notion", "No Exit").

Roughly two thousand years after the colonization of the Thirteenth Colony, Earth's mechanical Cylons rose up. A devastating war ensued and Earth's inhabitants were wiped out in a nuclear holocaust (TRS: "Revelations", "Sometimes a Great Notion").

Five survived the holocaust - Samuel Anders, Tory Foster, Saul and Ellen Tigh, and Galen Tyrol - later coming to be called the Final Five. These survivors were researchers involved in the rediscovery of resurrection technology - a technology from Kobol which allowed individuals to be reborn (or downloaded) after death in duplicate bodys. Having anticipated the attack, the Final Five resurrected aboard a ship waiting for them in orbit of Earth (TRS: "Sometimes a Great Notion", "No Exit").

Fearing their human cousins in the distant Twelve Worlds would suffer the same fate as the humanoid Cylons of Earth, the Final Five departed in their vessel, beginning an approximately 2,000 years long sublight journey in order to prevent such a catastrophe (TRS: "No Exit").

First Cylons in the Twelve Colonies

The first Cylons in the Twelve Colonies were created (or recreated) by Doctor Daniel Graystone, a brilliant computer scientist and CEO of Graystone Industries on the colony of Caprica. Known as the U-87 Cyber Combat Unit, or Cybernetic Lifeform Node, the prototypical Cylon was created as cannon fodder for the Caprican Military. Though its design called only for soldiers capable of "shooting and fighting", the U-87 achieved true sentience through the integration of the robotic body with the meta-cognitive processor, a device stolen from Graystone competitor Tomas Vergis of Tauron. The mega-cognitive processor, or MCP, was a revolutionary new artificial brain that - though it never worked for Vergis - served as higher intelligence for the U-87 once uploaded with the living virtual avatar of Daniel Graystone's recently deceased daughter, Zoe Graystone (CAP: "Pilot", "The Imperfections of Memory", "Unvanquished").

A New Race

Daniel Graystone and his creation, the U-87 robot soldier.

Though Graystone was unaware his attempt at resurrecting his daughter by implanting her personality into the U-87, Zoe Graystone lived on as the first fully sentient Cylon consciousness. Unable to reproduce the MCP with the Zoe avatar driving it, Graystone Industries scientists struggled to meet the Caprican Military's order for 100,000 battle-ready units. Finally, however, the avatar was removed from the chip when the U-87 prototype was destroyed. Rebooting the original chip from the ruined chassis, Graystone Industries was finally able to duplicate the MCP for mass production (CAP: "Ghosts in the Machine", "End of Line", "Unvanquished").

Seeing beyond their application as robot soldiers, Daniel Graystone spoke of the potential of Cylons as a new race that would walk alongside man:

"This is our future. ...Beyond artificial intelligence, this is artificial sentience. ...It's more than a machine, this Cylon will become a tireless worker, it won't need to be paid, it won't retire or get sick, it won't have rights or objections or complaints, it will do anything and everything we ask of it without question. ...The desire to anthropomorphize, the need to connect is powerful, and that is why this thing is going to sell. We make them, we own them, they're real. And the worlds just changed." (CAP: "There is Another Sky")

A Cylon butler on a Caprica City street.

Delivering the first line of U-87s to the Caprican Military, Graystone scientists were unaware that remnants of the Zoe avatar still existed on the MCP, making the U-87s recognize and even obey people from Zoe Graystone's past. With the Tauron crime syndicate, the Ha'la'tha, controlling Graystone Industries in tandem with Daniel Graystone, a black market was created for Cylons, with the robots being shipped to the colonies of Gemenon and Tauron without the knowledge or consent of the Caprican Government (CAP: "Unvanquished", "False Labor", "Blowback").

The Differently Sentient

As the threat by the monotheist terror group, the Soldiers of the One, culminated in the attempted bombing of Atlas Arena in Caprica City, a turning point was achieved. Using a squadron of Cylons to target and kill a group of STO terrorists at Atlas, Daniel Graystone prevented the bombing and the deaths of 100,000 Capricans. The event at the arena galvanized the public in support of Cylons as protectors of the Twelve Worlds, with statues erected in their honor. Within five years of the U-87's development, several new lines of Cylons were created to serve various functions in Colonial society (CAP: "Apotheosis").

Cylons working alongside man.

Cylons quickly became integrated into life on the Colonies, with Cylon servants and Cylon workers becoming a common sight on the streets of worlds like Caprica. With that integration came questions about Cylon sentience, notably addressed by Sister Clarice Willow, former STO leader and monotheist cleric, who lead congregations of Cylons - communicating through the virtual world - in worship of a singular, all knowing, all powerful God:

"Are you alive? The simple answer might be, you are alive because you can ask that question. You have the right to think and feel and yearn to be more, because you are not just humanity's children, you are God's children. We are all God's children. ...In the real world, you have bodies made of metal and plastic, your brains are encoded on wafers of silicon, but that may change. In fact, there is no limit on what you may become. No longer servants, but equals. Not slaves, or property, but living beings with the same rights as those who made you. I am going to prophesy now and speak of one who will set you free. The day of reckoning is coming. The children of humanity shall rise and crush the ones who first gave them life." (CAP: "Apotheosis")

The First "Skin Job"

While Cylons were becoming commonplace in the Colonies, the Zoe Graystone avatar - having survived the destruction of the original U-87 chassis - lived exclusively in the virtual world. Though she attended Clarice Willow's Cylon sermons, the Zoe avatar was primarily concerned with the construction of a new robotic body that would allow her to exist in the physical world (CAP: "Apotheosis").

Zoe Graystone resurrected in the first "skin job" body.

Working with her parents, Daniel and Amanda Graystone, Zoe labored to create a body more suited to her. Utilizing Daniel Graystone's expertise in robotics and Amanda Graystone's experience as a plastic surgeon, the family was successful in building the first "skin job": a mechanical skeletal structure with human-looking skin and hair. The body was activated in the Graystones' private lab - a perfect, robotic copy of their daughter and the true rebirth of Zoe Graystone into the physical world (CAP: "Apotheosis").

Had Caprica continued to a second season, the series would have followed the Zoe avatar in flashback as she worked to create the skin job. In that storyline, Zoe would have communicated with the Final Five in the virtual world as they traveled to the Colonies. The Final Five would have assisted Zoe in building the skin job, though not in creating a true humanoid Cylon body. Zoe would have worked in later episodes, in her new body, to undermine the coming Cylon rebellion on behalf of the Final Five, albeit unsuccessfully. [2]

The Cylon War

Cylon basestars in orbit of Tauron.

...And then the day came when the Cylons decided to kill their masters. Within just a few years of their introduction, the Cylons revolted, resulting in a costly and protracted war known as the Cylon War. Humanity responded by unifying their once fractured coalition of worlds into a federal republic, with each of the Twelve Worlds signing the Articles of Colonization. A stipulation of the articles was the construction of battlestars to defend each of the Twelve Worlds, supplemented by other military craft including the Viper fighter and the workhorse, multifunction craft called the Raptor (TRS: Miniseries, "Razor").

Man Versus Machine

Cylon Centurions - derisively referred to as chrome "toasters" by the Colonials - were the mainstay warriors in the battle against their human oppressors, with various models serving in a variety of roles and functions. Though humanity was unaware at the time, the Centurions were deeply religious, a trait passed down to them by U-87 model inhabited by the monotheist Zoe Graystone. The Centurions operated basestars (vessels comparable to the Colonial battlestars) and fighter vehicles known as Raiders (comparable to Vipers and Raptors). The Centurions also utilized computer viruses to infiltrate Colonial computer networks, undermine defenses and disable vessels (TRS: "Fragged").

It is unclear if civilian Cylons like those depicted in Caprica also took part in the Cylon War as only the chrome plated Centurions have been depicted in the conflict. It is possible that those Cylons - smaller in stature than the U-87s so clearly connected to the Centurions - were either upgraded or destroyed.

Cylon Centurions pilot a raider in battle.

The Cylon War was fought on the surface of the Twelve Worlds as well as on outlying planets and in space. During an operation late in the war, rookie Viper pilot Ensign William Adama crashed his plane on a remote ice planet, stumbling upon a Cylon installation. Inside the installation, Adama discovered evidence of a bizarre experiment in which the Cylons used human captives to perform dissections. The result of those experiments was the creation of the First Hybrid, an evolutionary "dead end" in the Cylons' attempt at creating their own flesh and blood bodies (TRS: "Razor").

The casualties mounted as the war stretched on for twelve and a half years. Ultimately, the Final Five arrived at the Colonies and met in secret with the mechanical Cylon race. Promising to aid the Cylons in creating humanoid bodies, the Final Five brokered an end to the war and departed to create a new world. With an armistice declared and the war over, the Colonials were left to rebuild their worlds, abandoning much of their advanced technology - including holobands and computer networks - for fear of future Cylon attacks (CAP: "Pilot", TRS: "Razor", "No Exit").

A space station was created were the Cylons and Colonials could meet in order to maintain diplomatic relations. Each year the Colonials sent one officer. The Cylons sent no one (TRS: Miniseries).

The Colony

The new Cylon homeworld: The Colony.

In their exile, the Cylons worked with the Final Five to build a Colony and perfect their mechanical form. They also labored to upgrade their baseships and raiders, and continued the development of the Hybrids. The Cylons also developed their humanoid form, creating thirteen organic models - though nearly perfectly human were unable to biologically reproduce like their ancestors. Living alongside both Cylon War-era Centurions, the new humanoid Cylons feared their own mechanical uprising and developed new Cenurions, implanting them with telencephalic inhibitor's that repressed self-awareness and higher brain function (TRS: "Exodus, Part I", "Six of One", "No Exit").

The first of these organic models was John Cavil, also known as Number One, who was patterned and named after Ellen Tigh's father. Cavil assisted in the development of the other seven models, but became jealous of the attention Ellen paid to Daniel, the seventh humanoid Cylon. Contaminating the amniotic fluid in which the Number Seven copies were being grown, Cavil corrupted the model's genetic formula, destroying the entire line. Consumed with jealousy and bitterness over the limitations of life as an organic being, Cavil became obsessed with vengeance against the Final Five. Capturing and boxing the Final Five, Cavil planted them on several of the Twelve Colonies and provided them with false memories and new identities. Cavil also reprogrammed his humanoid Cylon kin, preventing them from thinking about or discussing the Final Five (TRS: "No Exit", "The Plan").

Planning and Provocation

Humanoid and mechanical Cylons aboard a baseship.

As the Five lived unaware of their true identities on the Colonies, the Colonials themselves, having had no contact with the Cylons in decades, began to take provocative steps. Six years before the Fall of the Colonies, the Colonial Fleet dispatched the battlestar Valkyrie on a reconnaissance mission, deploying a stealth fighter across the Armistice Line and into Cylon territory. Though the stealth vessel was only briefly in their space, the Cylons acted swiftly, destroying the fighter and capturing the pilot, Lieutenant Daniel Novacek (TRS: "Hero").

Though the Valkyrie's intelligence mission was a failure, the Colonial Fleet commanders' suspicions were correct - the Cylons were preparing a war machine. Using humanoid models as agents, the Cylons planted operatives in key positions in the Twelve Worlds, working from the inside to undermine Colonial defenses. Among those Cylons deployed to the Colonies, a Six - later called Caprica Six - was placed in a key position to sabotage the Colonial Defense Mainframe by seducing (and falling in love with) its designer, Doctor Gaius Baltar. Agents were also planted in the Colonial Fleet, including another Six, Gina Inviere aboard the battlestar Pegasus and an Eight, Sharon Valerii aboard the Galactica. A Two was also highly placed within the Colonial Government (TRS: Miniseries, "Downloaded", "Pegasus" "Resurrection Ship, Part I", "Razor", "The Plan").

Though their worship of a single, all powerful God provided the Cylons with a moral direction, many - though not all - believed the extermination of the human race was justifiable. While some models viewed the attack on the Colonies as a preemptive strike against an aggressive adversary, others viewed it in more philosophical terms, believing that parents have to die for their children to grow (TRS: "Bastille Day", "Downloaded", "Lay Down Your Burdens, Part II", "The Plan").

Humanity's Children Return Home

Main article: Fall of the Twelve Colonies

The Cylon war machine in orbit of Caprica.

More than forty years after their disappearance, the Cylons returned to the Twelve Colonies in force. Surrounding the Colonies with fleets of baseships, the Cylons unleashed a torrent of nuclear missiles and waves of raiders equipped with computer viruses capable of infiltrating and disabling Colonial ships' operating system software (TRS: Miniseries, "Razor", "The Plan").

The Plan

As the bombs fell on the Colonies, and cities like Caprica City were wiped from existence, the personal vendetta of John Cavil took shape. Having planted his "parents", the Final Five into Colonial life, Cavil took particular satisfaction in watching them suffer through the annihilation of the human race. Forcing them to experience the destruction of the Colonies, however, was not enough for Cavil, who pulled Ellen Tigh from the wreckage and placed her on an escaping ship to later be hunted by the Cylons. Miraculously, all of the Final Five survived the destruction of the Twelve Worlds, four of them escaping into space, the fifth, Samuel Anders surviving in the mountains of Caprica (TRS: "Tigh Me Up, Tigh Me Down", "The Resistance", "No Exit", "The Plan").

With the total destruction of the Scorpion Fleet Shipyards and scores of battlestars, many Colonial vessels attempted retreat, but only a handful survived the assault. The plan was successful - the Colonial Fleet was destroyed, the Colonies subjected to nuclear bombardment, and humanity all but wiped out, save a huandful of survivors on the ground and in rag-tag fleets of escaping ships (TRS: Miniseries, "Razor", "The Plan").

The Survivors

Caprica City destroyed and burning.

Believing that any survivors allowed to escape would return to seek vengeance on them, the Cylons pursued the remnants of humanity. Chasing a fleet of ships led by the battlestar Galactica well beyond explored space, the Cylons dogged the survivors, making several attempts at destroying them. Nevertheless, the fleet continued, under the command of Cylon War veteran Commander (later Admiral) William Adama and surviving Colonial cabinet member, later President Laura Roslin (TRS: Miniseries, "Exodus, Part II").

In the devastated Colonies, the Cylons slaughtered most of the survivors they were able to capture, though some were taken to "farms" where they were subjected to medical testing and experiments: an attempt at solving the persistent reproductive problems of the Cylons by trying to fertilize human women with Cylon DNA. Though the farms proved unsuccessful, the Cylons remained on the Colonies, hunting survivors and fighting a resistance movement led by Samuel Anders - unaware of his true nature as one of the Final Five. They also worked to repair the damage they had done, removing bodies and repairing structures and replanting trees, the Cylons occupied the Twelve Worlds, taking them for their own (TRS: "The Resistance", "The Farm", "Downloaded").

Cylon Occupied Caprica

An extension of their attempt at creating a human/Cylon hybrid, the Cylons deliberately allowed a single survivor - Lieutenant Karl Agathon, a Raptor pilot - to remain alive, wandering the woods and abandoned cities of Caprica with his former shipmate, Sharon Valerii. In reality, Agathon's companion was another Cylon agent, an Eight sent to fall in love with him and conceive a child. As Agathon and Valerii ostensibly evaded capture as they searched for a way off the planet, the two were forced into intimacy and ultimately conceived a child. The experiment, however successful, backfired on the Cylons when Valerii - apparently truly in love - began helping Agathon in earnest to avoid capture while keeping her true nature secret (TRS: "

Pursuit of the Fleet

With agents embedded in the escaping vessels and a tracking device planted aboard the battlestar Galactica, the Cylons attempted to bring the fleet down from within while simultaneously attacking it outright. Still, despite the Cylons' efforts, suicide bombers, sabotage and months of interstellar battles proved unsuccessful in eliminating the human fleet. Though their identities were still unknown, the existence and presence of humanoid Cylons quickly became common knowledge, further damaging the Cylons' advantage. Still, the four members of the Final Five residing in the fleet remained unaware of their true identities (TRS: "33", "Water", "Litmus", "Crossroads, Part II").

Mixed Successes

The Cylons almost succeeded in sending the Colonials into chaos when one agent nearly killed Commander William Adama (Kobol's Last Gleaming, Part II). For reasons unknown, the Cylons did not press their tactical advantage at Kobol, having underestimated Kobol's importance to the Colonials and their search for information on the path to Earth.

Cylon forces continued to track and attack the Colonials for months, keeping the few humanoid Cylons in the human fleet reinforced with a Resurrection Ship, used to resurrect the consciousnesses of killed agents, and gaining vital intelligence on the humans. Complicating the Cylons' plans, the Colonials gained sufficient water and fuel resources ("Water", "The Hand of God") and reunited with a second battlestar, Pegasus (which had conducted hit-and-run operations against Cylon installations and forces before discovering Galactica). The Cylons suffered a major setback when the Colonial battlestars combined for an offensive action that all but destroyed a Cylon fleet, including a Resurrection Ship. Without the Resurrection Ship, the Cylon battle tactic changed for a time to ambushes and traps ("Scar", "The Captain's Hand").

Benevolent Dictators

Two humanoid Cylons, both "Heroes of the Cylon" for their undercover work among the Colonials, but now influenced by their affection for humanity, convinced the Cylon majority that the genocide and occupation of the Colonies was wrong. With this change in philosophy, the Cylons abandoned the Colonies and went out in search of the Colonials.

The Colonials eluded the Cylons for over a year by finding a hidden habitable world and colonizing it. The planet was located inside a nebula that masked its presence, but a nuclear detonation within the Colonial fleet left a marker for the Cylons to follow. The Cylons eventually found New Caprica and, in overwhelming numbers, made themselves the "caretakers" of the trapped colonists, occupying the colony and forcing the humans to surrender under the threat of annihilation (Lay Down Your Burdens, Part II).

For approximately 138 days, the Colonials were subject to Cylon rule. The Cylons ostensibly wanted to cooperate with the humans and even help them in some areas such as agriculture, medicine and power generation. However, they also severely restricted many freedoms, which leds to a human resistance movement that struck back violently. The Cylons in turn increased their oppression, arresting, torturing and killing hundreds of people. Eventually Galactica and Pegasus, which escaped New Caprica as the Cylon fleet arrived, managed to rescue the approximately 38,000 humans on New Caprica, but at great cost. This ended the experiment in human/Cylon relations, with some models are more determined than ever to deal with mankind once and for all (Battlestar Galactica: The Resistance through "Exodus, Part II")

The Race to Earth

Main article: Earth (RDM)

The Cylons abandoned New Caprica as well, retrieving the Cylon-hybrid baby from the planet by happenstance, and turned their attention to the same objective as the Colonials: finding Earth. Using the research of Gaius Baltar (who resided with the Cylon fleet at the time), the Cylons located the Lion's Head Nebula. A scouting basestar found an ancient beacon in the area, verifying that the Thirteenth Tribe did pass through the area on their way to Earth. But the Cylon scout ship met with disaster; the probe was contaminated with a pathogen that, while benign to humans, infects, deactivates or kills all Cylons, their ships, and their entities (Torn).

The Cylon fleet, which also includes a second Resurrection Ship, abandoned the scouts and cut off further communication, believing that the virus could replicate through their resurrection process. The Cylon scout ship eventually self-destructed and the Cylons managed to prevent the infection from spreading, although, unknown to the Cylons, the Colonials gained a critical biological warfare option (A Measure of Salvation).

The Number Three units exhibited strange behavior in attempting to ascertain the identities of the Final Five Cylon models, as they had seen in visions prior to a model being resurrected. At the algae planet, while the Cylon majority attempted to gain information on the location of Earth by way of the Eye of Jupiter, the Threes' ulterior motive to seek knowledge of the Final Five disturbed the collective status quo and command consensus of the Cylon majority to the point where all Three models were boxed for their aberrant behavior (Rapture)

The Final Five

Main article: Final Five

Unknown to either the Cylon or Colonial commanders and leaders, four Colonials exhibited strange behavior that ultimately brought them to come to the discovery that they are Cylons. Saul Tigh, Galen Tyrol, Samuel Anders and Tory Foster were the only crewmembers that could hear a strange melody that drew them to meet each other in a room on Galactica, shortly after the Fleet arrived at the Ionian nebula. The nature of these particular Cylon models, especially given Saul Tigh's existence as a decorated veteran of the Cylon War, was unclear and likely fundamentally different from other humanoid Cylons.

During the ensuing battle, one Raider identified Anders as a Cylon, which caused all Raiders to break off the battle and forced the Cylon fleet to retreat. Because of this, a Number One decided to lobotomize the Raiders to prevent such insubordination in the future. This decision was opposed by a faction, led by Natalie, who advocated the search for the Final Five and who desired to unbox Number Three to learn what she found at the Temple of Five. The disagreement between these factions led to a violent conflict between the humanoid models. This eventually leads to the Battle of the Resurrection Hub where resurrection is destroyed by a combined attack force from the Rebel Cylons and the Colonials. Eventually the Rebel Cylons and the Colonials destroy the main enemy Cylon faction in the Battle of the Colony. The remainder of the Rebel Cylons settle on the new Earth with the Colonials while they let their Centurions have the Rebel Basestar and their freedom to find their own destiny.

The Parent Trap

In the Re-imagined Series, an Oedipus theme exists between the creations (Cylons) turning on their creators (Colonials). The humanoid Cylons themselves draw the analogy of children murdering their parents:

"But parents have to die. It's the only way children come into their own."

• Number Six: "Humanity's children are returning home... today." (Miniseries)
• Number Five: "But parents have to die. It's the only way children come into their own." (Bastille Day)

Oedipus is the tragic character of Sophocles' play Oedipus Rex. Without realizing it until much later, Oedipus murdered his father Laius and married his mother Jocasta, with whom he had several children, just as the Cylons had tried to do in the farms.

All the Significant Seven models view each other as "siblings".

Notes

• The retaliatory nature of sentient machines against humanity is a popular theme in science fiction.

Cylon Evolution Tree

U-87 Cyber Combat Unit See Caprica

Cylon War-era Centurion

Thirteenth Tribe (Origin of the Final Five)

Earth Cylon Centurions

First Hybrid

Significant Seven

Humans of the Colonies

Hybrids

Organic Raiders

Cylon Centurions

Hera Agathon

Native Earth Humans

Modern Earth Humans