Daniel Graystone
founder of Cylon technology
Dr. Daniel Graystone was the Caprican computer engineer behind Graystone Industries and the U-87 battle robot. By marrying a stolen processor to his late daughter's consciousness program, he created the first Cylon and set the Twelve Colonies on the road to their own destruction.
Dr. Daniel Graystone was a Caprican computer engineer, the leading mind behind Graystone Industries, and the man most responsible for the creation of the Cylons. His company built the U-87 battle robot for the Caprican military, but the machine became truly intelligent only when Graystone installed in it the consciousness program left behind by his daughter Zoe. His work belongs to the early history of the Twelve Colonies, decades before the first Cylon War, in the prequel era of the Reimagined continuity centered on the world of Caprica. (Caprica, "Pilot")
Graystone Industries and the U-87#
Graystone founded Graystone Industries, made his fortune with the holoband, and was competing for a Caprican Ministry of Defence contract to build a robot soldier. His company produced a working body, the U-87, but the processor needed to give it real intelligence defeated his team. The project fell years behind schedule and far over budget. (Caprica, "Pilot")
The Caprican government, frustrated, threatened to give the contract to Vergis Corp, a Tauron rival that had announced a working Meta Cognitive Processor. Graystone asked the lawyer Joseph Adama to use his Ha'la'tha connections to steal it, and Joseph's brother Sam carried out the theft. Tomas Vergis later accused Graystone of being behind both the theft and the killing of two of his friends during it. (Caprica, "Pilot"; Caprica, "Know Thy Enemy")
The first Cylon#
Graystone's daughter Zoe had used her own computing skill to build a program that could copy a person's mind, personality and memory included, into a virtual avatar. She made one copy, of herself, before she died in a Soldiers of the One suicide bombing aboard a maglev train. That avatar is known as Zoe-A. (Caprica, "Pilot")
When Graystone discovered his daughter's creation, he offered Joseph Adama, whose daughter had died in the same bombing, a reconstruction of her in return for the stolen processor, and built "Tamara-A" from her data. He then loaded Zoe's avatar into a U-87 fitted with the processor. The robot seemed to collapse, and Graystone believed Zoe lost, but the prototype became the first truly functional Cylon, a name he coined from Cybernetic Lifeform Node. For weeks no other unit would work properly, since Zoe was still inside the original, and that prototype later fled Graystone Industries in a failed escape. (Caprica, "Pilot"; Caprica, "Rebirth"; Caprica, "Ghosts in the Machine"; Caprica, "End of Line")
The road to war#
Graystone survived a string of crises, including a takeover bid by Vergis, with help from Amanda and the Ha'la'tha. The U-87s won public trust when they stopped a terrorist attack at Atlas Arena, and Graystone Industries went on to build Cylons for labour and household work. Graystone and his wife, Dr. Amanda Graystone, reconciled with Zoe-A in the virtual world, and he kept his promise to build her a lifelike body, finishing it about five years later. (Caprica, "The Heavens Will Rise"; Caprica, "Here Be Dragons"; Caprica, "Apotheosis")
The Cylons, having inherited the monotheist faith that Zoe carried, came to see themselves as children of God who shouldn't stay slaves. That belief grew into revolt, and the machines Graystone had brought to life rose against their human creators in the Cylon War. (Caprica, "Apotheosis"; Battlestar Galactica (miniseries))
Frequently asked questions
- Who is Daniel Graystone?
- Dr. Daniel Graystone was a Caprican computer engineer, the leading mind behind Graystone Industries, and the man most responsible for the creation of the Cylons. His work belongs to the early history of the Twelve Colonies, decades before the first Cylon War.
- How did Daniel Graystone create the first Cylon?
- Graystone's company built the U-87 battle robot for the Caprican military, but it became truly intelligent only when he installed the consciousness program left behind by his daughter Zoe. He loaded Zoe's avatar into the U-87 prototype fitted with the stolen processor, producing the first truly functional Cylon.
- What was the U-87 and why couldn't Graystone Industries complete it?
- The U-87 was an advanced battle robot Graystone was trying to build for the Caprican military. The company could engineer the chassis readily, but the development of a Meta Cognitive Processor capable of following and carrying out complex orders defeated it.
- How did Daniel Graystone obtain the processor for the Cylon?
- The rival Tauron firm Vergis Corp announced a working processor, and the government threatened to hand it the contract. Graystone had the lawyer Joseph Adama arrange the theft of that processor through the Ha'la'tha, carried out by Joseph's brother Sam, and Tomas Vergis later accused him of the deaths of two men during it.
- What happened after Graystone built the first Cylon?
- Over the next several years Graystone Industries expanded the Cylons beyond military hardware into industrial and domestic roles. The Cylons, having inherited the Monotheist faith carried by Zoe's avatar, came to see themselves as enslaved and eventually rose against their human creators in the Cylon War.
Sources
- EpisodeCaprica, "Pilot", Caprica, Season 1 (2010)
- EpisodeCaprica, "Know Thy Enemy", Caprica, Season 1 (2010)
- EpisodeCaprica, "Rebirth", Caprica, Season 1 (2010)
- EpisodeCaprica, "Ghosts in the Machine", Caprica, Season 1 (2010)
- EpisodeCaprica, "End of Line", Caprica, Season 1 (2010)
- EpisodeCaprica, "The Heavens Will Rise", Caprica, Season 1 (2011)
- EpisodeCaprica, "Here Be Dragons", Caprica, Season 1 (2011)
- EpisodeCaprica, "Apotheosis", Caprica, Season 1 (2011)
- EpisodeBattlestar Galactica (miniseries), Miniseries (2003)
Spotted a factual error or a primary source we missed? Email a correction. Every flagged claim gets reviewed.
Followed from this entry

Zoe Graystone
Zoe Graystone was a Caprican computing prodigy and one of the earliest pioneers of Cylon technology. The daughter of Daniel and Amanda Graystone, she created a digital recreation of her own consciousness, Zoe-A, that would shape the future of artificial life.

Caprica: the Colonial capital
Caprica was the richest of the Twelve Colonies, seat of the Colonial government, and the world where the Cylons were built. The Cylon attack destroyed it.

Cylon War: the machines revolt
The Cylons rose against the people who built them on Caprica. Twelve years of fighting ended in a sudden Armistice that held for forty years.

Cylon
The Cylons were a race of sentient machines created as military robots by Graystone Industries on Caprica. Built from research into artificial consciousness, they rebelled against their human masters, fought a long war, and forty years later returned to annihilate humanity.

Tamara-A: the avatar of a lost daughter
Tamara-A was a sentient artificial intelligence created in the years before the Cylon War through the Avatar Program. Based on Tamara Adams, a girl killed in the Caprica City Maglev bombing, she was conceived as part of a bargain between Daniel Graystone and the Adama family and was abandoned soon after her creation.

Tauron: the Old Colony
A proud industrial world scarred by famine, civil war and a recognised genocide of its native Ha'la'tha, long before the Cylons finished the job.
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Cylon
The Cylons were a race of sentient machines created as military robots by Graystone Industries on Caprica. Built from research into artificial consciousness, they rebelled against their human masters, fought a long war, and forty years later returned to annihilate humanity.
Cylon War: the machines revolt
The Cylons rose against the people who built them on Caprica. Twelve years of fighting ended in a sudden Armistice that held for forty years.
Drew: Graystone Industries technician
Drew was a technician of Graystone Industries assigned to the U-87 battle robot project. He helped Daniel Graystone investigate why the prototype could not be replicated, ran afoul of the machine controlled by Zoe-A, and later helped foil a Soldiers of the One bomb plot at Atlas Arena.
Holoband
The Holoband was a Caprican device that immersed its wearer in V-World, a vast shared virtual reality. Widely used yet condemned as a symbol of cultural decadence, the technology was bound up with the rise of the Cylons.
Olaf Willow
Olaf Willow was a Monotheist terrorist tied to the Soldiers of the One who took orders from his wife, Sister Clarice Willow. He helped hunt rival cells, chase Zoe Graystone's avatar program, and carry out the Atlas Arena bombing, where he died believing the One True God would save his soul.
Philomon
Philomon was a lab technician at Graystone Industries who worked on the U-87 battle robot program. While trying to discover why the prototype could not be copied, he was unknowingly aided by Zoe-A, the consciousness controlling the robot, and was killed when it rebelled.
Tamara-A: the avatar of a lost daughter
Tamara-A was a sentient artificial intelligence created in the years before the Cylon War through the Avatar Program. Based on Tamara Adams, a girl killed in the Caprica City Maglev bombing, she was conceived as part of a bargain between Daniel Graystone and the Adama family and was abandoned soon after her creation.
Tomas Vergis: the Tauron whose stolen chip made the first Cylon
Tomas Vergis built the meta-cognitive processor that Daniel Graystone stole to animate the first Cylon, at the cost of two murdered Vergis employees. He took Graystone Industries away from its founder, lost it to a Ha'la'tha blackmail campaign, and chose the manner of his own death.
Zoe Graystone
Zoe Graystone was a Caprican computing prodigy and one of the earliest pioneers of Cylon technology. The daughter of Daniel and Amanda Graystone, she created a digital recreation of her own consciousness, Zoe-A, that would shape the future of artificial life.
Zoe-A
Zoe-A was a sentient artificial intelligence created by the Caprican prodigy Zoe Graystone as a digital recreation of herself. Through a damaged chip placed in the U-87 battle robot, the program from which she sprang came to underlie every mechanical Cylon built before and during the Cylon War.
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