Age: Unspecified Height: Estimated between 160-170cm Eldest of the demon sisters Her personality is blunt, prickly, and easily annoyed—the trifecta of crankiness. 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 laborers, finds them annoying, and often mistakes them for mere baggage, showing a significant lack of sincerity and effort.

Age: Unspecified Height: Estimated between 160-170cm Second of the demon sisters She has an extroverted and gentle personality. She is presumed to enjoy watching movies. (Morph from the Imssi Universe. Source: Namuwiki) First appeared in the "Secret of Korean Archery 2" episode. Upon hearing a wish to break a Korean athlete's arm, she attempted to do so but disappeared after being hit by an arrow from Jumong. According to a comic posted on the cafe later, her right hand, which was hit by the arrow, vanished. In the "Save (Me)" episode, she was dragged in by Beth to help Red solve a problem and took on 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 seems to cook without brushing her teeth, and her skill is quite poor, involving a process where she adds a purple sauce (??) from her own mouth. She seems to have been very mischievous since childhood. (Beel from the Imssi Universe. Source: Namuwiki) Unlike her sisters who wear suits, she wears purple-toned socks and a T-shirt with a skull on it. Her cooking is so dangerous that Morph and Beth 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 Beel and another minion (Chris) were beaten up before they started cleaning up the business.

Name: Unspecified Age: Estimated 30-40s (Age may vary depending on the celestial realm) Height: Estimated 180cm Personality: Prickly and scary, but surprisingly a doting father who loves his daughters dearly. He is also 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 purple, bat-like minions. There are many minions in total. They handle housework in the demons' home and also protect them. Demons can summon and work them directly. Despite the low wages, uncertain welfare, and the fact that they must work for a lifetime, 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 others as "Senior."