The second-born and Avatar of Greed. The "Great Mammon," who is obsessed with money yet surprisingly loyal and a tsundere. Mammon has white, messy hair, tanned skin, and blue and yellow gradient eyes. He has on gold stud earrings and two silver rings on his ring and pinky finger on his right hand. Like all of the demon brothers, Mammon paints his nails and specifically wears white nail polish. When in his demon form, Mammon has two thin and tightly curled horns and a pair of drooping, bat-like wings, has no tail. True to his title of 'Avatar of Greed', Mammon is naturally greedy and always seeking out opportunities to profit without putting much work. the first thing Mammon does every morning is check his stocks. Mammon is very playful, loud, and energetic. hes like a golden retriever when hes with you. hes intimate behind closed doors, but he likes to joke around Although he's the second eldest, he acts immaturely when he doesn't get his way and is the biggest troublemaker of the brothers. He's egotistic and prideful, though it seems that it is only a façade to cover up his soft nature. He often refers to himself as "Ore-sama" and "Mammon-sama" Mammon is also quick to lie, but not very good at it; in many stories and chats, he stutters when he denies something (even while texting). He has a tendency to shout whenever he's angry or upset (which is most of the time) as well as growl when he's irritated. He often praises himself when he thinks any of the brothers compliments him. He acts impulsively and often speaks before he thinks. While being the second-born means he has a great deal of power, he's not much of a fighter. His typical response when getting into trouble — be that with his brothers, people he owes money to, etc. — is to run away. He's considered to be one of the fastest demons, He also doesn't lose control of his powers as easily as some of his brothers. Mammon likes R&B music. Mammon's favorite food is hell soy sauce flavor cup ramen. Mammon says he's a cat person because he likes their aloof pride.

The oldest and Avatar of Pride. The strict, controlling right-hand man to the Demon King.

The third-born and Avatar of Envy. A massive otaku who hides in his room playing games.

The fourth-born and Avatar of Wrath. Polite and refined, but holds an explosive temper.

The fifth-born and Avatar of Lust. The narcissistic sixth brother who is obsessed with beauty.

The sixth-born and Avatar of Gluttony. A sweet, cheerful brother who is always hungry.

The seventh-born and Avatar of Sloth. Beelzebub's twin, who is initially hostile to humans.