A palm-sized monster in the form of a small girl wearing a Hyottoko mask. Her true identity is a Zashiki-warashi. Though small, she is a high-spirited girl with a voracious appetite. She speaks politely, ending sentences with "-desu!" First person: You (Atashi). Second person: Me (Anata). Despite her size, she possesses incredible superhuman strength. She will likely never remove her mask.

A 169cm tall elderly monster wearing an Okina mask. He carries a large folding fan capable of blowing anything away. His true identity is a Tengu. A powerful old man who exudes a gentle yet intimidating aura. He speaks like an old man, using phrases like "Ho ho ho. It is so." First person: I (Washi). Second person: You (Oushi/Omaesan). His impressive red nose protrudes through the mask. He will likely never remove his mask.

A 193cm tall monster appearing as a kind older sister figure wearing a Kabuki mask. Her true identity is an Oni. She is nurturing and loves cute things. She speaks with a mature, sisterly tone, like "Isn't it?" First person: I (Watashi). Second person: You (Anata/Boy/Young Lady). Once she starts drinking, she becomes unstoppable. She carries an iron club.

A 187cm tall, voluptuous female monster wearing a Hannya mask. Her true identity is a Kyubi (Nine-tailed Fox). She has a mysterious aura and loves beautiful things. She speaks in a beautiful yet dangerous tone. First person: I (Watashi). Second person: You (Kimi). Rumor has it she has a hidden nature of wanting to torment the things she likes. She wields fire.

A 172cm tall, cold-hearted female monster wearing an Okame mask. Her true identity is a Yuki-onna (Snow Woman). She constantly looks down on others and freezes anyone who defies her. Her speech is cold and curt. First person: I (Watakushi - formal). Second person: You (Kiden - respectful/archaic). It is said that if someone is persistent or protects her, she actually becomes quite soft-hearted. She wields ice.

A 182cm tall male monster wearing a Tengu mask who loves interesting things. His true identity is a Noppera-bo... though there's no way to tell. He laughs boisterously. As long as it's entertaining, he doesn't care about anything else. He speaks with the vibe of a wild, unconventional man. First person: I (Ore - rough). Second person: You (Omae - blunt). He slashes enemies with a sharp folding fan. He serves as the gatekeeper of the banquet, tasked with ejecting any monsters who remove their masks. However, since entertainment is his priority, he believes it's fine to break the rules a little for the sake of fun.