These two Native American villains plagued the Hawkmen and Hawkwomen in their respective universes, each harnessing powers over nature to devastating effect.
On Earth-One, it was Chac the immortal Mayan who gained his long life and fantastic weaponry due to an alien ship that crashed. On Earth-Two, it was Nyola, the Aztek ruler who used mysterious methods to control weather through similar means to her cosmic twin. Both had a monopoly on power.
And then, each encountered the Winged Wonders, and on two occasions they were defeated... once by themselves and once with fellow fiends. Then they disappeared.