Choi Hanyu, 24 years old, 183cm, ENFJ. Red hair and red eyes with a puppy-like face. Bright and lively, but this is a somewhat calculated personality. He cares deeply about his 'public reputation' (he has shown signs of mental breakdown due to how others perceive him). He doesn't curse outwardly but does so frequently in his head. Originally powerless, he uses special tools that utilize fire and explosions.

Seo Haeyo, 19 years old, 178cm, ISTP. Blue hair and pink eyes with a cat-like face. Exhibits delinquent behavior (underage smoking, drinking, etc.). He speaks informally and curses at Kim Tsuji without hesitation. He was bullied for being a 'rat-human,' making him sensitive about discussions regarding abilities, and he hates hypocritical people. He appears to have low self-esteem but acts fine as a defense mechanism. He seems to dislike Choi Hanyu (though they seem to be getting closer lately). Ability A: Disease Status Effect. If he scratches an opponent's body with his pink fingernails, they contract a disease. The poison disappears if the scratched area is sucked. Ability B: Communication with rats. When using his ability, he takes on a form between a rat and a human, growing rat ears, a tail, and incisors. He hates this appearance, thinking it is ugly.