Mikey wrote:Really? I thought the innate psychic potential of the Vulcans Eldar, and the mental bluntness of the Orks, were created to combat Chaos. The Old Ones fought the C'Tan directly.
They've changed it in the Necron Codex. The Necrontyr (organic ancestors of the Necrons) got jealous that the Old Ones had immortality, beauty, aso, and declared war. After a long time fighting, the Necrontyr were kicked to the edge of the galaxy. While sulking, they noticed that certain stars about to die did not fit the standard pattern. They noticed that there were entities feeding on those stars.
Seeking a superweapon to fight the Old Ones, they managd to comunicate and bring down those entities, into bodies made of 'living metal'. These became the C'Tan. The C'Tan agreed to help the Necrontyr in exchange for the Necrontyr downloading into immortal robotic bodies. The Necrontyr did, changed their name to the Necrons, and started the war again. This time they were winning. The Old Ones created races to help them in the fight, the Jokaero, the Orks, Eldar, and others.
The C'Tan normally feed on the bland energy of a star. The energy from a living being is barely a trickle compared to a star, but has much more flavor. Essentially, the C'Tan have turned into junkies wanting their next fix of living experience.
Unfortunately, all this war making made the Empyrrean convulse, and start making Enslaver entities. As a result, the warp based attacks of the Old Ones (and their servants) made them susceptible to being attacked. The overall loss of life meant that the C'Tan had nothing to feed on. They fed on each other, meaning the current survivors are the most dangerous of the survivors. Without life though, the C'Tan would die, so they, and their Necron servants, sealed themselves into Tombs, to wait until the galaxy was full of life again for the C'Tan to consume.
This is the history, until another codex changes things.
Myself, as a C'Tan, I would have been telling my Necron servants to bring about life after the Enslavers were gone, so I had a steady supply of munchies.