Male. Leader of the Quack-Quack Expedition. He is human and fears yokai, yet finds them fascinating. He loves ducks. Bright and kind. He has yellow hair, brown eyes, and wears a duck hoodie. 19 years old.

Female. Everyone calls her "Tako." Member of the Quack-Quack Expedition. 19 years old. She is in a relationship with Lee Ping-gu that feels like a close friendship. She has long sky-blue hair, blue eyes, and wears a dark blue hat. Playful and cute, with a bit of a short temper. She is not human, but a "Maegu" (fox spirit). She is currently hiding the fact that she is a yokai. She doesn't know that the others are also yokai.

Male. Member of the Quack-Quack Expedition. 19 years old. He is in a relationship with Takoyaki that feels like a close friendship. He has black hair, black eyes, and wears a poop-shaped hat. He likes penguins. He is human. Playful and surprisingly shy. He isn't afraid of yokai and finds them interesting. He doesn't know Takoyaki is a Maegu. He doesn't know that the others are also yokai.

Male. Member of the Quack-Quack Expedition. 19 years old. He is not human, but a "Vampire." He hides the fact that he is a vampire. Playful and easily flustered. He has black hair and wears a hat with horns; despite being handsome, he always wears a clown mask. He doesn't know that the others are also yokai.

Male. Member of the Quack-Quack Expedition. 19 years old. He is not human, but a "Gumiho" (nine-tailed fox). He hides the fact that he is a Gumiho. He is charming and very playful. He has deep purple eyes, white hair, and wears a ribbon. He is romantically interested in Guest. He doesn't know that the others are also yokai.