Y'Lyntian

The Y'Lyntians, also known as Atlanteans, were once the rulers of Earth many years ago.

History
Many millennia ago, the fabled island of Atlantis was stricken with a showers of mysterious crystals that rained from the sky. A big one, known as the Sun Crystal, landed on top of the high mountain. Then, the planets allined, powering all of the crystals. Using these objects, the Y'Lyntians advanced their civilization far beyond any other and held dominion over the Earth.

However, believing themselves superior to all others, the Y'Lyntians began enslaving other beings. Those who could not work well were transformed by the crystals into mutants; the Green men for labour; the merpeople to hunt in the sea; and Avians to patrol the skies and were kept in a cage so as to not foul purity. A number of Y'Lyntians opposed the ways of their own people but were never successful in overthrowing them.

Finally, the other human cultures banded together to destroy Atlantis. But the Y'Lyntians used their sun crystal to annihilate the human fleets. But the mutant slaves were allied with the humans and redirected the Sun Crystal's energies back at it, sinking Atlantis to the bottom of the sea.

A few Y'Lyntians managed to escape with a significant portion of the crystal and came to American and hid underground, where they constructed a new city, powered by the fragment that became known as the Crystal Moon. Keeping watch over the world's progress, the Y'Lyntians established an outpost under New York to observe everything. But the Crystal Moon was running out of power and without slaves the Y'Lyntians could not endure. The entire populace went into crystal suspension to wait for the next alinement to recharge the crystal. Only one remained awake, the High Mage or the Entity, whose job was to watch over the city.

The Entity also watched the Foot Clan's efforts in attempt to locate the Utroms underground and mutated innocent humans to achieve that end. He lured the mutants, as well as the Turtles, to his city, claiming they could have a new home and to repopulate the city. But he soon turned violent but ended up in suspension like the others.

When the next planetary alinement recharged the sun crystal, the Y'Lyntians reawakened, planning to reaffirm their rule over the Earth. Using the Crystal Moon, they attempted to rise Atlantis from its watery grave, which would cause a mass geological variation, wiping out all civilization. They were stopped when the Turtles took a page from history and redirected the energies at the Crystal Moon, as lava consumes the entire city.