Species: yaga
Anthropomorhic species from the video game Fate/Grand Order.
Yaga are hybrids of humans and Demonic Beasts that inhabit the Russian Lostbelt.
he world of the Russian Lostbelt diverged from that of the Proper Human History in 1570 AD when an asteroid struck and plunged the world into an ice age. Most humans died, and while Russians were used to the cold and prepared for such weather, 90% of their population perished and they were on the cusp of extinction. Ivan the Terrible and his mages were able to save the country by combining humans with magical beasts, Ivan himself becoming the first.
Before they possessed weaponry that could kill Demonic Beasts, the strong Yaga cannibalized the weak Yaga, akin to artificial selection. After Russia's population was merged with Demonic Beasts, the Yaga ate those who were consumed by their power, couldn't control it, or couldn't ever see themselves living as Yaga. Next, they fed on the young and sickly, followed by the straight-up weak. Because of this cannibalistic history, the Yaga are said to have been named after Baba Yaga, the man-eating witch from Slavic folklore.