So I'm working on the upcoming DLC called Tales of the Arnor and it's going to go pretty hard into the background on the Yor.
To do that, I really need to explain a bit about the background of this game which, since it's a 30 year old series there's a lot of bits involved. No pun intended.
In the beginning...
So at the start there were the Mithrilar. These were beings that we would consider to exist outside our universe. One of them, called Draginol (which is where I stole of my user handles from) was different from the others in that he could sense time despite existing outside time as we think of it. He was concerned over the linear development of the universe and used the cosmic Talananth, the primary tool that the Mithrilar had, to create in universe beings that came to call themselves the Arnor.
The Arnor themselves were split into two groups. The Ele'nir and the Dre'nir. The short version is that Draginol focused the most effort on the Dre'nir to be most like him in that they could sense time and thus have a sense of urgency. The Ele'nir were less, by his standards, sophisticated and didn't experience the passage of time in a meaningful way.
Now, lots of things happen in between leading to the end of the Mithrilar presence within the universe. However, the Ele'nir and Dre'nir persisted and watched life develop and evolve. By this time, the Arnor's Ele'nir had accepted the branding the Ele'nir had given them "Dread Lords". From the Dread Lords point of view, the rest of the Arnor were basically mindless cattle. The Arnor thought the Dread Lords were vicious and dangerous.
The Dread Lords had uplifted a species called the Iconians and in time, the Iconians developed their own artificial servants called the Yor. (They obviously didn't have Terminator of BSG shows in their stories). The Yor weren't sentient though. They had strong AI but they had no self-motivation. They just did as told.
Eventually, the Dread Lords and Arnor had their massive civil war which ended with both of them disappearing. But in this mix, the Dread Lords gave the Yor self-motivation which made them truly alive. And the rest is history.
However, within the Yor there's a lot of history there. The Yor had many iterations and we have shown these in the GalCiv games over the years with the most famous being the Nyx series:
and there was also the D-deries (Dark Yor):
In Tales of the Arnor, we will be revisiting the Nyx series of Yor who we haven't seen since GalCiv II. They will be a playable civ with their own tech tree (as in, a completely new tech tree).