Skyfolk

Skyfolk (天上人, Tenjōjin) are a race of beings ruled by the Sky King that have come from the sky to take the surface of the earth for themselves.

Overview
The Skyfolk are a violent race who wish to take the surface of the Earth for their own and subdue the human population beginning from the Hero Association.

The Skyfolk are large humanoid creatures that have various bird features. Their overall appearance is reminiscent to the traditional Japanese Tengu. Skyfolk have large wings that grant them the ability to fly, and can also shoot destructive beams out of their mouth.

Alien Conquerors Arc
The first appear in A-City attacking by surprise the headquarters of the Hero Association. However shortly after the attack they are all slaughtered by the alien Melzalgald and the Dark Matter Thieves.