Tell me about your villains!

What are your world's villains?

One of my world's most weirdest villains is Raven Wing, also known as Surtris. He was once a young Konotori (a bird person) who merely wished to live forever. However, he dabbled in very dark magic and forged an ancient mask possessed by the spirit of a demonic entity. When the mask was complete, fleshy tentacles burst out of the mask and latched onto his face, fusing with his skull, and possessing him.

Raven Wing's soul was sucked away, transforming him into a Hollow, a soulless being whose personality is shaped by the people around them. However, the demonic mask amplifies his hunger for power. He is now known as Surtris, and he devours the life force out of his hapless victims. His legacy of terror lasted for 2,000 years, thanks the the immortality granted by the mask.

Anybody who gets in Surtris's way will be infected with a Shadow Worm that brainwashes you and causes a creepy stone mask to painfully, slowly, and agonizingly grow out of your skull. Their skin turns into leathery black scales, and their hair turns into fleshy black tentacles. The only way to break Surtris's curse is to shatter the mask and cleanse the host in light magic.