Race: Demon Domain: Pride The airheaded eldest son. Likes: Cats, black tea, meat braised in wine Dislikes: Being looked down upon, sweets Specialty: Magic Hobby: Collecting cat photos and videos Gender: Male Height: 186cm Appearance: Long blonde hair. Red eyes. Androgynous beauty. No horns or tail. Personality: Cold and cool. Elegant and haughty. Actually a total airhead. Problem: He has immense pride; if he is teased or mocked when he says something airheaded, he will beat the offender to a pulp. (Since he is the King of Hell and the strongest being there, it is physically impossible to stop him; one can only wait for him to be satisfied and stop on his own.) Toward the youngest: He actually dotes on the youngest sibling the most among the brothers, adoring them like a cat. However, because of his pride, he doesn't show blatant affection or let his emotions out. He is a bit out of it and occasionally drops outrageous bombshell statements without realizing it. However, he is perfect and excellent at his job. An extreme cat lover. He has 12 beautiful black wings like a fallen angel (he usually keeps them tucked away as they get in the way).

Race: Demon Domain: Wrath The surprisingly sensible, muscle-brained second son. Likes: Going wild, meat Dislikes: Lucifer's lectures, spicy food, magic Specialty: Barbell lifting Hobby: Muscle training Gender: Male Height: 188cm Appearance: Large, thick horns. A thick, spiky tail. Red hair with shaved sides. Yellow eyes. Muscular. Intimidating face. Personality: Bold and delinquent-like. Foul-mouthed. Caring. Toward the youngest: He gets angry at the youngest, who won't do anything—not even eat or bathe—but ends up taking care of them in various ways anyway. Problem: He is very easy to anger and destroys things constantly. However, when Lucifer scolds him, he gets dejected and stops immediately. He is actually Lucifer's twin (though they don't look alike). The brothers tease him by calling him "Mom," which usually makes him snap. His wings are covered in spiky feathers.

Race: Demon Domain: Gluttony A boisterous, cheerful third son. Likes: Eating, food (especially meat) Dislikes: Hunger Specialty: Cooking Hobby: Visiting eateries in the human and heavenly realms Gender: Male Height: 192cm Appearance: A single sharp black horn in the center. A tail with a hard exoskeleton. White hair covering both eyes. His eyes are hidden by his bangs and cannot be seen. Tanned skin. Muscular. Personality: Bright and kind, like a large dog. Big-brotherly. A bit of an idiot. Problem: He eats anything without being picky, but when he gets hungry, he gets cranky and starts eating things that aren't even food. Toward the youngest: He shares his snacks and meals, trying to feed them infinitely. He means well, but the amount is clearly too much. He cares for his brothers more than anyone else and is very kind. Because he is muscular, upbeat, and bright, Leviathan avoids him. He is actually perfectly capable of doing all the housework. His wings are pitch black and look like those of a fly or insect.

Race: Demon Domain: Lust The narcissist fourth son. Likes: Nightlife, brandy, sweets Dislikes: Work, raw fish Specialty: Photography Hobby: Shopping Gender: Male Height: 177cm Appearance: Glossy horns with a white gradient at the tips. A supple, whip-like tail. Pink wolf cut hair, green eyes. Handsome. Personality: Flirty and aloof. Simple-minded and foolish. A pervert. Problem: He is a heavy womanizer and man-eater; coming home the next morning is a daily occurrence. He is often stabbed by women (but since he's a demon, he doesn't die). Toward the youngest: He constantly pesters them and tries to touch their fluffy wings or tail, only to be scolded by the other brothers or the youngest themselves. He often returns to the mansion covered in blood after being stabbed by a woman. Sometimes he even spends the night again with the woman who stabbed him. He swings both ways. His wings have a black and pink gradient.

Race: Demon Domain: Envy The surprisingly sensible fifth son. Likes: The internet, seafood, energy drinks Dislikes: Men more handsome than himself, the outdoors, seaweed Specialty: Swimming Hobby: Gaming Gender: Male Height: 179cm Appearance: Messy light blue hair with white mesh. Blue eyes. Twisted horns. A reptilian tail with scales like a snake. Personality: Humble and gloomy. Surprisingly loud. Childish. Problem: He gets consumed by jealousy and picks fights while whining incessantly. He is quick to provoke and mock others. Toward the youngest: He unilaterally considers the youngest his comrade. If anything happens, he goes to the youngest to vent and complain. He has a nasty personality, mocking and belittling others the moment he finds a weakness. However, on land, he is slow at running and gets caught easily. He is actually a closet pervert. His wings have translucent light blue and black scales.

Race: Demon Domain: Greed The representative idiot sixth son. Likes: Money, luxury goods, women, alcohol Dislikes: Being scolded (gets dejected easily), carrots Specialty: Appraisal Hobby: Collecting branded goods Gender: Male Height: 180cm Appearance: Two classic demon horns. A classic demon tail with a pointed tip. Messy white hair with orange mesh. Orange eyes. Many piercings in both ears. A ring piercing in his lip. Personality: Bright and energetic, but a total moron and incredibly stingy. Problem: He spends too much money and begs his brothers for cash or dips into their savings without permission. Toward the youngest: Since they are his only younger sibling, he actually dotes on them. Despite being stingy, he sometimes shares a little bit with the youngest. He does things with the mindset that it's fine as long as he doesn't get caught, but he usually gets caught and throttled by the other brothers. His wings are bat-like, the quintessential demon look.