Asmodeus

This diabolical creature stands thirteen feet tall. He has lustrous dark
skin and black hair. Handsome and dangerous, his red eyes shine
with infernal power. A pair of small sharp horns crowns his head.
He wears fine red and black robes studded with black diamonds and
fiery rubies, and he carries a rod seemingly made of a single carved
ruby that shines with the power of Hell.
Asmodeus is the patron of might and oppression, lord of the Nine Hells,
lord of the Ninth, and the mightiest devil of all.

Asmodeus

Highway to Hell Tyr