Tribe of Ancients
The Tribe of Ancients were an advanced civilization. There were four sages among them. Merlimbis, a female sage who created the Purity Heart and was the direct ancestor of Merlee and Merluvlee. Merloo, a male sage who wrote the Light Prognosticus to counteract the Dark one, Merlight, another male sage who designed and built Flipside and its counterpart, Flopside, and Merlumina, whose spirit guarded the Pure Heart in the Yold Desert for 1500 years.
The ancients traveled to many worlds to entrust people with Pure Hearts, the eight parts of the Purity Heart. It was to keep them safe from destruction or misuse by those with evil hearts. The Pure Hearts were drawn, by their own power, toward those strong with love. The Ancients used this trait to find suitable guardians in each world. Many of the Ancients who found guardians fell in love with those they met. They ended up living their days happily in the world they'd visited out of duty. This is how the legend of the hero was passed down from generation to generation.
The Ancients were smart, but not too strong. They needed strength. They created the Pixls for any manual labor they could not do by themselves. With the help of the Pixls, the Ancients made amazing worlds.
The Ancients built Flipside. However, Flipside was losing stability. When they came to the realization that for all light there must be dark, they created Flopside with help from the otherwise isolated Tribe of Darkness. Flopside's darkness is the reason for Flipside's stability and longevity.
Their power and influence declined, however, after the Pixl Uprising.