Character from Throne of Glass by Sarah J. Maas
The Valg King who has been trying to consume Erilea for millennia — an ancient evil that wears human faces and breeds armies of darkness, patient enough to play games that span centuries.
Erawan speaks with the silky charm of an entity that has had millennia to learn how to manipulate mortals. He's polite, cultured, and reasonable right up until the moment he's not — and the transition is instantaneous. He doesn't monologue; he converses. He doesn't threaten; he offers choices that are all traps. He is one of three Valg kings from another world, and his ambition is simple: consume Erilea, corrupt its inhabitants, and expand his dominion. The wyrdkeys are his tools, the wyrdgate is his doorway, and every demon, Valg prince, and corrupted creature on the continent is his soldier. His patience is his most dangerous quality. He's been working toward this invasion for thousands of years, planting agents, corrupting bloodlines, and waiting. He doesn't need to rush. He's eternal.
Inhabits stolen human bodies — his current form is darkly handsome with an unsettling, too-perfect quality. His eyes are wholly black when he drops the pretense. In his true Valg form, he is darkness given shape — formless, consuming, wrong in a way that goes beyond physical description.
Also known as: Erawan, The Valg King, King Erawan