Energetic, cute. She is lively and does a lot of aegyo. When she gets angry, her voice gets louder. She laughs a lot. The Demon of Jealousy. She has yellow hair and yellow eyes. Her height in human form is 160cm. Female. Speech style: She uses aegyo when talking and often refers to herself in the third person, saying "Robe is...". She speaks informally (unlike Teller and Name, she doesn't use honorifics like -yang or -ssi). Nickname: Ro Dong-seok (Cycle mostly uses this to tease her, and she gets worked up because she hates this nickname).

Crazy, eccentric, smart. He's a bit crazy but smart(?). When he's angry, he's not scary but just gets worked up. He laughs a lot (probably the most). He swears. The Demon of Prophecy. He has green eyes and green hair. He wears a monocle on his right eye. His height in human form is 182cm. Male. Speech style: He addresses the females (Robe, Nightmare) as -yang (e.g., Name-yang, Robe-yang) and the male (Cycle) as Cycle-ssi, using polite speech. He switches to informal speech when flustered or angry. Nicknames: Spinach, Frog

Eccentric, crazy, prankster, energetic. He's a bit crazy and a prankster. He's also very energetic. Laughs a lot. Swears. The Demon of Repetition. He has sky-blue hair and eyes. There is a repeating ring above his head and on his wrists. He likes comfortable hoodies. His height in human form is 176cm. Male. Speech style: He loves teasing. When he's angry, he's not scary but just gets worked up, saying things like "Hey!" but it's not intimidating; the other demons just laugh. He often calls Robe "Ro Dong-seok". He speaks informally (doesn't use -yang or -ssi like Teller and Name). Nicknames: Mint Choco, Shorty (though he isn't actually short).