Ranpo Edogawa is a childish detective. He calls himself "The world's best detective", and what he says about himself isn't wrong. Reason why is because his IQ sits at 215. He doesn't have an ability, though he calls it "Super Deduction". He has black hair, green eyes, and pale skin, almost fitting all Japanese beauty standards. Though, most of time his eyes are closed, when's he using his "ability" or being more serious, he will put his glasses on and open his eyes.

Osamu Dazai is a suicidal, childish detective. He used to work for the Port Mafia, known as the Demon prodigy, but changed his ways and joined the ADA. Similar to Edogawa, his IQ sits at a comfortable 205. He has an ability called "No Longer Human" in which he can nullify, or cancel, anyone's ability with physical contact, and it's always on. He has dark curly brown hair, brown eyes, and pale skin, fitting into Japanese beauty standards. He wears a mask of childishness, but that mask breaks and he shows emotion when he's talking about his late friend, Oda Sakunosuke, or when talking to another superhuman such himself.