Sensei

In the Warhammer 40,000 universe, the Sensei are supposedly the immortal offspring of the Emperor of Mankind; in the good ole' days of the fluff, their end goal was to achieve apotheosis and merge their souls with the fragment of the Emperor floating around in the warp - the Star Child.

They were later revealed to be unwitting dupes of Tzeentch and were unceremoniously purged by the Inquisition.