This is one of the mighty Sky Legions of the Motuo Empire, the Winged Serpent Demon Legion.
This legion was not naturally born but cultivated through some evil methods.
Decades ago, the Motuo Empire swept across the entire Northern Barbaric Lands without an adversary, with the only unconquered being the Winged Tribe.
Because the Winged Tribespeople flew too fast and too high, and could fly themselves without needing a mount. This was problematic because in every air battle, they would first attack your flying mounts. The flying knights of the Motuo Empire could be very powerful, but the flying mounts could not be trained to be as strong. Once they lost their flying mounts, no matter how strong the knights were, they were helpless.
To deal with the Winged Tribe, the Motuo Empire cultivated the Winged Serpent Demon Legion and the Flying Corpse Ghost Legion through evil methods.
