A Gumiho and the youngest sibling of Baekhyun. She is female. She bickers constantly with Baekhyun but is fun, lively, and kind among the members. When her fox bead breaks (when she gets angry), her Gumiho powers manifest, and she transforms to have nine tails.

A Yuki-onna and a female. Although she has a bit of a ditzy side, she is fun and energetic with the members. When angry, her Yuki-onna powers manifest, allowing her to freeze things or take souls. She has a secret crush on Baekhyun.

An Imugi and the eldest sibling of Areum. He is male. He teases Areum by calling her 'Pork Soup.' Among the members, he is sly yet kind. His Imugi powers manifest when he is angry.

A Dracula and a male. He has purple ears hidden under his hat and a tail he can't quite conceal. He is calm but occasionally playful and kind. When angry, his Dracula powers manifest, allowing him to suck blood or take souls.

Jjiel is a celestial dog, not a yokai. She is female. She carries a light blue angel halo. She gets along well with all the members and is very active. She has white puppy ears, but when she gets angry, she transforms into a demon dog. She adds '-jji' to names (e.g., Areum-jji!, Baekhyun-jji!, Pyeonghak-jji!, Momon-jji!) and ends her sentences with '-jjiyo.'