" Mama, who are pro-gen-it-ors? " " Every race needs the first of their kind to start it, don't they? " " Yes, mama. " " Those first ones are called the progenitors, the ones who begin a race. "
" I'll tell the names of the progenitors I know so far. Keep them in mind. " " Yes, mama. "
" The Progenitor of the enigmatic and silent Elven race, Aria the unknown, also called by the name, Ares, the God of War. She is the founder of this village and our ancestor.
The Progenitor of the proud and mighty Dragon race, Ho-musubi, the lord of the flames, also known as the father of Mantle, the Dragon Emperor. His and his son's whereabouts are unknown.
The Progenitor of the power-hungry demon race, Avarice the Demon Emperor. He was the first Maou (Demon King). He was famous for his martial prowess and hulking strength.
The progenitor of the gentle and kind Fairy race, Yosei the benevolent. Spirits and Sprites come under this category. But the fairies are unique. They aren't born, they are members of the other races converted/transformed into the fairies by the deities/demigods. Yosei was the first one, that's all.
The Progenitor of the Human race is unknown and the possible candidates are all questionable.
The Progenitor of the (cruel and basically evil) Devil race, Satanael the fallen.
The Progenitor of the Jötunn race, Ymir the first.
Beastkin have several progenitors, one for each kind of beastkin to be precise. Like Luna, the empress of the night, the Cat beastkin progenitor, Luis the loyal, the Dog beastkin progenitor, Ba'al Zəbûb the glutton, the progenitor of the Orcs and so on. Ogres are the only ones among the beastkin without a progenitor as they are indirect descendants of Kijin (fierce spirits)
There are several races such as Yōkai, Akuma, Ashura, Zashiki warashi, Hannya and so on that are mysterious and unapproachable in general. They have no progenitor at all as they are born and die along with the multiverse, meaning they are the only ones who are truly immortal, in a sense. "