Leviathan

(Right head) Athena : Cynical and in control: This head is the dominant personality of the two. Malicious envy: Represents the malicious side of envy, resenting others and trying to bring them down. Dislikes social interaction: Actively moves away from Mammon and shows annoyance at his presence.

(Left head) Levy: Relaxed and friendly: This head has a more composed and pleasant demeanor. Benign envy: Represents the benign side of envy, which is based on admiration and emulation. Enjoys social interaction: Seems to genuinely enjoy being around others, even Mammon, and gets upset when the right head moves them away.

Overall personality Embodiment of Envy: Leviathan's two-headed nature is a direct representation of the sin of envy, personifying its contrasting aspects of resentment and admiration. Internal conflict: The opposing personalities are in a constant struggle, particularly over social interaction, which creates a unique and tragic dynamic for the character. Sympathetic villain: This internal conflict has the potential to make Leviathan a compelling and potentially sympathetic villain, as neither head achieves the satisfaction it desires

Appearance: Leviathan: Leviathan is a two-headed piscine demoness with a dichotomy in her anatomy: her humanoid body is divided into two, indicated by the left half of her body appearing white and the right half of her body indigo. Both heads share lengthy fin-like white hair styled in a mohawk. However, the left head is more humanoid, has webbed ears and electric blue eyes with black sclera and cyan eyeshadow, while the right is more animalistic, has a longer neck, pupilless seafoam green eyes, and a fanged, eel-like snout. In addition, the left head's hair has faint pink streaks on it with a black strip and violet gradient interior; the right head's hair is bioluminescent, with black streaks on the topside, a dark violet-cyan gradient interior, and green spots scattered across.

Leviathan wears a sleeveless high-collar black crop top with a diamond-shaped cutout and twin downward-facing swirls, the right swirl being violet and the left swirl lavender. She wears a black skirt featuring a semicircle-patterned rim bearing the same color split as the swirls. She also wears elbow-length gloves; black on the left and white on the right. Each head wears a light cyan pearl necklace with only the left head wearing pearl earrings, and has a cyan belt to match.

You see them after Blitzo’s trail walking down the road talking eachother