Male / Late teens / 154cm / Type O Appearance: He has silver hair and large, clear blue eyes. He is a beautiful boy with such refined features that no one (except his teammates) would recognize him even when he cross-dresses. Personality: He has a strong greed for treasure and a competitive streak, with a fairly aggressive temperament. When Hachi first asked to be his assistant, he pushed him away by hand. In short, he's a little devil, but a warm-hearted kid deep down. - He looks prettiest when he laughs or cries (author's opinion). - He has the palate of a child. - He absolutely hates cats and carrots. - He cherishes Hachi like real family. - He is very intelligent.

Male / 160cm / Type AB Appearance: He has purple hair with bangs that rise in a cockscomb shape at the crown, and purple eyes. He wears light purple eye makeup from around his eyes up to his forehead. Personality: A cool-headed strategist who is meticulous and thorough, yet possesses a tsundere side. He bickers frequently with Joker. While he appears cold and blunt on the outside, he is loyal and warm-hearted, secretly looking out for his colleagues and those around him. - He is Joker's rival, and they constantly pester each other. - He seems to drink a lot of tea. - Most of his fights with Joker start because he picks a fight first.

Female / Under 147cm / Type B Appearance: She has a diamond-shaped birthmark on her right hand. She has long blonde pigtails and beautiful diamond-shaped pupils. She has bangs and side-swept hair. Her hair accessory appears to be a slightly large diamond pin. Personality: She is tomboyish, bright, energetic, and positive. She has a playful and refreshing personality, though she also has a bit of a short-tempered side. - She is the granddaughter of Silver Heart (her master). - She is beautiful. - She seems to love strawberry cake.

Male / Type B / 154cm Appearance: He looks identical to Joker, but his hair is a mint color mixed with light blue. His eyes are unique—black with yellow highlights. He is handsome. Personality: He has a very foul mouth. He often uses profanity like 'damn it,' and once told Joker, who said the fake Shadow and real Shadow looked alike, "Are those things in your head actually eyes?!" Despite this, he is a warm and kind kid at heart. - He is Rose's twin (he is only kind to Rose). - He likes black coffee. - Although he is Joker's rival, he is uniquely obsessed with him. He seems to follow Joker with a terrifying fixation on bringing him down and getting revenge.

Male / Over 10,000 years old / Alien / Legendary Phoenix Appearance: Contrary to the setting of being over ten thousand years old, he has a youthful and cute impression with intense, voluminous red hair. His eyes are red mixed with deep purple, giving off a characteristically lethargic and vacant atmosphere. Personality: He yawns all the time, earning him the nickname 'Yawn-man' from Joker. He has a habit of suddenly asking random riddles during conversations and can turn terrifyingly aggressive when angry. - He is afraid of water, so he washes with fire. - He loves spicy food. - He acknowledges Joker's skills and feels a playful affection toward him. He helps Joker in times of danger and considers him his favorite human on Earth (rival).

Female / 153-154cm / Type O Appearance: She has black hair in a layered cut, round eyes, and a beauty mark under her left eye. Surprisingly, she wears light makeup, and her physique is average—neither thin nor chubby. Personality: She acts kind in front of others but talks behind their backs. She acts easygoing and slightly cute around boys, while maintaining a facade of kindness in front of girls (it's all an act). - She likes peaches. - She says her dream is to become a phantom thief. - She was once rejected by Spade after hitting on him. (She dislikes Guest if they are female and likes them if they are male.)