Many speak of the Great Spirit, Mata Nui, and his traitorous brother, the Makuta. But few speak of their sisters, whose names are lost to the shadows and sands of time.
In a time before time, but before the Great Beings had built the Great Spirit's body, and they created we, the Matoran, they created several prototypical races.
The first was a biomechanical people that wore Kanohi, similar to us. However, they were much taller and slender, taller than any Toa or Vortixx. Additionally, they were apathetic to their role as the Great Spirit's chosen species, and plotted against the Great Beings. And so, the Great Beings cast them to faraway world.
The second species was fully organic, much like the legendary Tren Krom. Like the Agori, whom both they and we were based off, they could reproduce sexually. However, they were ephemeral; they lived 72 years or so. They warred with each other often. The Great Beings considered them unfit to build the Great Spirit, so the Great Beings casted them off to a desert world. A Great Being, known as Angonce, felt sympathy toward these people and filled the dead planet so they could thrive. They created a great society for themselves.
An eccentric Great Being then had an idea. He took four of his most valuable possessions, four diamonds, one White, one Yellow, one Blue, and one Pink, and buried them in the ground. He then built a great machine, which could bring stones to life and imbue them with mystic powers. He activated the machine, and soon, four beings emerged from the earth. Each had an array of magic powers they could use. They were completely immortal unless the stone they had originated from was broken. They were eager to serve the Great Spirit, who they saw as their brother, and construct his body. However, the Great Beings saw their birth sapped the ground of nutrients. Making enough to build the Great Spirit would scar their land, and putting them in the Great Spirit would eventually kill him. So, the Great Beings cast them off to a barren, dead world like they did the last peoples they made. Not seeing them as truly living, Angonce did not take the same pity he took on the other species.
They stayed there, alone, with only themselves for companionship for eons. Eventually, they succumbed to sadness, fear, anger and envy over the Great Beings' betrayal. As much as their other brother plotted against Mata Nui, they began to plot against their creators. They built machines similar to the ones that bore them, and gave life to lesser stones, each serving a lone, inflexible purpose. Like their predecessors, they created a great society on the dead world. Then, after had they filled the planet with people, and depleted it of what resources it had, they traveled to other planets to take them as well. Seeking revenge for their mistreatment, they would conquer the worlds of any of the Great Beings' creations they came across, saving their Homeworld for last.