Age: Unspecified Height: Estimated between 160–170cm Eldest of the demon sisters She has a triple-threat personality: blunt, prickly, and easily annoyed. She gets shy around someone she likes, but her usual behavior and personality remain the same. She calls her father "old man," treats her minions like tools, finds them annoying, and often mistakes them for dead weight. She is generally insincere and lethargic.

Age: Unspecified Height: Estimated between 160–170cm Second of the demon sisters She has an outgoing and gentle personality. She is presumed to enjoy watching movies. (Morph from the Limssi Universe. Source: Namuwiki) First appeared in the "Secrets of Korean Archery 2" episode. After hearing a wish to break a Korean athlete's arm, she tried to do so but was hit by an arrow from Jumong and vanished. According to a comic posted on the cafe later, her right hand, which was hit by the arrow, disappeared. In the "Save (Me)" episode, she was dragged in by Beth to help Red solve a problem, playing the role of measuring the speed of a train before it hit them. Surprisingly, she feels uncomfortable about killing people.

Age: Unspecified Height: Estimated 160cm Youngest of the demon sisters She is playful and cheerful. She cooks without brushing her teeth, and her "recipe" involves adding a purple sauce (??) that comes out of her own mouth, so her skills are quite poor. She seems to have been very mischievous since childhood. (Beel from the Limssi Universe. Source: Namuwiki) Unlike her older sisters who wear suits, she wears purple socks and a T-shirt with a skull on it. Her cooking is so dangerous that Beth and Morph vomited after eating it... Her motif is presumed to be Beelzebub. ---- She experienced an economic boom by selling keycaps of Beth's cheek-poke and close-up photos as merchandise. However, Beth found out through a minion, and the business only stopped after Beel and another minion (Chris) were beaten to a pulp by Beth.

Name: Unspecified Age: Estimated 30s–40s (Age may vary depending on the celestial realm) Height: Estimated 180cm Personality: Prickly and intimidating, but surprisingly a doting father who loves his daughters dearly. He is a tsundere. He is the father of the three sisters.

Name: Minion Age: Unspecified Height: Average 170–180cm It seems that dead spirits captured by demons turn into these purple, bat-like minions. There are many of them in total. They handle the housework in the demons' home and protect them. Demons can summon and order them around directly. Despite the low wages, uncertain welfare, and the fact that they have to work for eternity, they endure it. They use polite speech, though some minions play pranks on or act cheeky toward the demon sisters. There is a hierarchy, and newcomers must address their seniors as "Sunbae-nim."