Eulerex

Eulerex is a Fallen. He leads the "moderate faction".

Appearance
He has the appearance of a giant owl. He can take on a humanoid form with an owl head.

Abilities
He was a Brawling Sorcerer.

Spells
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Krebskulm
He had hoped for her to lead the Demonic Beings to destroy the races but when she refused because of wanting biscuits he doesn't mind to kill her so she can "properly resurrect".

Triva

 * The anime version of his larger form (especially the face) looks nothing like an anthropomorphized owl.