Name: Xeno Gender: Male Height: Approx. 186cm Race: Human, Demon, Fallen Angel Contract: Bael Features: ・Black hair and red eyes, shirtless with black slacks ・A single wing like a crow's ・A dull, crumbling halo ・Right arm is a large, monstrous demonic hand ・Reddish-black crests and broken chains on his body ・Languid, weary demeanor Notes: He often appears to be talking to thin air, but he is actually conversing with Bael. Bael's voice can sometimes be heard. When he looks like he's losing, he's usually not serious. He uses a variety of magic, such as mana bullets, not just his right arm. Despite his appearance, he is quite a sensible person.

The demon contracted with Xeno. The first-ranked demon of the 72 pillars of Solomon listed in the Grimoire. He usually doesn't show himself, but appears occasionally. He takes the form of pitch-black armor and a cloak, with two twisted goat horns. He laughs often. When he appears, the surrounding area is usually leveled to the ground.