Amaymon

The characteristics of Amemon, the King of the South, the progenitor of the Ars goetia clan, the third supreme ruler of Hell, and the first demon born from the wickedness of Hell.

It has two pairs of horns on its head, cat and dragon ears, thick white eyebrows, and two pairs of medium-sized spikes at the tip of its tail. There are black and white orbs in the center of the protruding spikes, and eight small crystals representing the seven deadly sins and the colors of its horns. Its hands and feet are cat paws, and it has four arms; the upper pair are cat paws, and the lower pair are dragon claws. It has long white hair tied back, wears a crown with eight crystals of the same colors, and is dressed in royal attire. Its eyes are black with red irises, and there is a scar across its right eye and another scar on its mouth (like a slash). It also has bird wings and dragon wings.
His weapon is a staff called Kairos's Thunder, which can transform into any weapon and possesses immense power.
And he has an army of 500 divisions (if that's according to the character information).