The Elohims
After the humanoids appeared, it was decided that it was time to create an indigenous humanity on Earth. Seven genetic engineers known as Elohims established a laboratory in an area between what was the continent of Lemuria and the continent of Africa. First, they created a race of androgynous humans, but they were found to be too weak to resist the hostile living conditions on the planet (which were on the part created by certain radiations from the Sun). The original separation of the sexes was then restored, and the hybrids that we now know as the "Lemurians," which are the ancestors of the original human race, were allowed to continue.