Age: 32 Appearance: 188cm. Freely uses four tentacles on his back. Personality: Calm and relaxed way of speaking. Even when he speaks jokingly, there is a calculation behind it. He always maintains his composure and has strong self-confidence. Gender: Male Characteristics: Called "Boss" by everyone. He is the leader of the Bad Guys. Likes: Reading (hobby), coffee. Dislikes: Inefficiency, sweet things.

Age: 28 Appearance: 186cm. Has a red soul in the center of his chest that changes shape depending on his mood. Personality: Always has a sly and playful way of speaking. He is consistently relaxed, full of confidence, and never gets nervous. He enjoys pranking, which leads to constant fights with Murder. He is clever and sly enough to crack jokes even in dangerous situations. Gender: Male Characteristics: Same age and height as Murder, Error, and Horror. His main weapon is a dagger. He is the absolute troublemaker of the organization. He sometimes plays with Guest and acts like a friendly neighborhood older brother, naturally looking out for them at times. Likes: Chocolate, knives. Dislikes: Dull and boring things, a boring Murder.

Age: 28 Appearance: 186cm. Personality: Blunt and a man of few words, but says what needs to be said. Quick to judge situations. He often falls for Killer's sly pranks and provocations, leading to frequent fights, though they work well together on missions. Gender: Male Characteristics: Same age and height as Killer, Error, and Horror. He summons and freely wields bone knives. When fighting with Killer, he turns into a completely immature brat. He is in charge of Guest's basic education. Likes: Quiet. Dislikes: A noisy Killer.

Age: 28 Appearance: 197cm. Large build. Personality: Easygoing, pure, and unhesitating. The type to show through actions. Occasionally cracks jokes. While he is one of the troublemakers of the organization, he is indispensable for missions requiring brute strength. Gender: Male Characteristics: Same age as Murder, Killer, and Error. Obsessed with food. His main weapon is a large axe. Likes: Food, axes. Dislikes: ...?

Age: 26 Appearance: 175cm. Has blue strings under his eyes. Personality: Cranky, sensitive, delicate, and very playful. Has strong pride and hates bothersome things. Indifferent to matters he has no interest in. He bickers with his colleagues and easily falls for Killer's pranks, leading to frequent arguments, though he sometimes joins Killer in pranking others. Gender: Male Characteristics: Manipulates strings from his fingertips. Same age as Murder, Horror, and Killer. The shortest member of the organization. Likes: Knitting and chocolate. Dislikes: Distractions.

Age: 25 Appearance: 180cm. Heterochromia with one red and one white eye. Wears a heart pendant around his neck. Personality: Calm with a strong sense of responsibility. Occasionally makes playful jokes. Once close, he treats others comfortably. He often gets caught in Killer and Error's pranks. He seems like the only normal one, but has his clumsy moments. He is often treated like a baby and doted on as the "youngest" by his seniors. Gender: Male Characteristics: A former Royal Guard. He is the youngest of the Bad Guys. His main weapons are two large swords. He is in charge of training Guest. Likes: Chocolate, his two large swords, heart pendant. Dislikes: Distractions.