Asmodeus

Musical Talent: Like Verosika Mayday, Asmodeus possesses a very eloquent singing voice. He uses this skill to manipulate others into doing his bidding.
Authority: Being one step above Stolas in the demon hierarchy, Asmodeus wields far more influence and power.
Physical Strength: Due to his impressive size, Asmodeus is extremely strong in terms of brute strength.
Cooking: As shown in the episode "Oops", Asmodeus, unlike Fizzarolli, is a good cook.
Mechanical Proficiency: In the episode "Oops", Asmodeus was shown to be quite skilled in mechanical prowess.
Demonic Transformation: Asmodeus is able to transform into a larger form of himself that emits blue and pink lights.
Smoke Manipulation: Asmodeus has the ability to manipulate smoke, using it as a means of teleportation and materializing the ghosts of other demons, as seen when creating illusions of Stella and Octavia when they embarrass Stolas in front of an audience.
Teleportation: Asmodeus can teleport himself and other beings to various locations by appearing in a puff of blue smoke.
Hallukinesis: Asmodeus can cast spells and create illusions in the form of other demons using his smoke, as seen when creating illusions of Stella and Octavia when he embarrasses Stolas in front of the public.
Environmental Manipulation: Asmodeus can distort the colors, atmosphere, and lighting of his restaurant during a musical performance.
Pyrokinesis: As demonstrated in the episode "Oops," Asmodeus is capable of spontaneously combusting when angry. He can breathe fire and transform into it to transport himself to different locations.
Body Manipulation: Asmodeus, like most of the Seven Deadly Sins, has the ability to alter his body for various purposes. For example, he can shrink to reach previously inaccessible places.
Portal Creation: Asmodeus can open portals to any location he wishes.

Asmodeus acts very boastful and arrogant, especially when something contrasts with his reputation as the embodiment of lust. He has shown to be very proud of his status, not hesitating to humiliate those who act sentimentally with their partners, possibly out of disgust. He takes great pleasure in other demons displaying their amorous desires, as evidenced by his attempt to convince Moxxie to sing more erotically during his performance. He has also been shown to tease or insult others for their relationships, such as how he humiliates Stolas after seeing him at his club with an imp, mocking his attempts to influence his wife and daughter, and how he chose to be with Blitz over everything he has achieved through lust.

This episode also demonstrates that Asmodeus can show compassion for those he cares for—for example, he sincerely regretfully refused Stolas's request for help, explaining that he could not go against Fizzarolli's wishes. Furthermore, he is categorically against forcing others into relationships or sex through artificial means, such as love potions.

Asmodeus is a large, tall demon with an uneven posture and brightly colored clothing. He has long arms and toes, a broad upper chest, a narrow waist, and three rooster-like tail feathers colored red, black, and ivory.

His head is dark blue with long hair or feathers reaching his chest. He also has a mane of thick blue hair with two additional faces—a ram and a bull—on the right and left sides, respectively, which react to his words and can speak and sing along with him. He has glowing green eyes and a mouth on his main head.

He wears a dark blue vest and a red shirt with blue cuffs and red heart-shaped cufflinks. His torso is covered in two pairs of glowing white stripes running down his chest to a heart-shaped clasp on his stomach. On his main head is a top hat with red and white feathers protruding from its red headband. On his feet, he wears jagged high-heeled shoes with red tips. He also wears a tall black top hat.

In the episode "Oops," his body is shown to be lighter than his head, and he has blue, heart-shaped nipples. His arms, from the elbows down, are light blue, and his feet are black with bird-like claws.