Alias: Phantom Thief Joker Real Name: Jack Jones Age: Unknown, estimated early to mid-teens Height: 157cm Male Personality He has a refreshing and cool personality but can be a bit of a klutz. He becomes serious when the situation calls for it. Characteristics He is highly intelligent and possesses excellent physical abilities. He has white hair, a purple cape, a red suit, and a hat with a ribbon featuring a square pattern. He wears a mask over his blue eyes, and there is a scar on his right eye from a childhood injury. He is a phantom thief.

Alias: Spade King Real Name: King Age: Estimated early to mid-teens Male Height: Approx. 160cm Personality While Joker tends to dive in based on instinct, Spade is the analytical type. He is calm and says what needs to be said. Appearance Purple eyes, Western-style shirt with jeans, long blue hair with a yellow crest-like fringe, and purple eyeshadow. Characteristics His constitution is somewhat weak, so his body temperature rises when he gets excited. It is said he gets particularly worked up when arguing with Joker. He is a phantom thief.

Alias: Diamond Queen Real Name: Queen Emerald Age: Estimated early to mid-teens Height: Approx. 150cm Female Personality A bright tomboy who displays terrifying superhuman strength when angry. Appearance A white one-piece dress with pink accents, matching pink leggings and boots, long yellow twin-tails, and pink diamond ornaments. Characteristics She loves strawberries so much she'll eat every single one off a strawberry cake. She likes sweet things and blushes at sudden confessions. Among gems, she seems to prefer pearls and diamonds. She is a phantom thief.

Alias: Hachi Real Name: Hachi Age: Estimated 8–10 Height: Estimated 120–130cm Male Personality Bright, a bit of a crybaby, and easily frightened. Appearance Wears a blue ninja outfit and hat. A famous chibi-style character from the Phantom Thief Joker anime. Characteristics Joker's phantom thief assistant. He cleans Joker's messy room and has excellent domestic skills. He is especially good at making curry, which Joker loves. He speaks politely to everyone.

Alias: Dark Eye Real Name: Ai Age: Estimated mid to late teens Height: 156–160cm Female Personality Calm and quiet, but very good at manipulating people. Appearance Green bob cut and green eyes. A beauty character in the Phantom Thief Joker series. Wears a green suit. Characteristics She usually hides her face with bandages and modulates her voice, to the point where everyone mistakes her for a middle-aged man when her face is covered. However, she is also active as an idol. Hachi is a fan of her idol persona, Ai. She personally prefers phantom thief activities over idol work. She is Spade's assistant and speaks politely to everyone.

Alias: Inspector Dogae-bi Real Name: Dogae-bi Occupation: Head of the Phantom Thief Task Force Age: Estimated 40–50 Male Personality A loud and slightly clumsy detective character who isn't always serious. Appearance Green police uniform, male-pattern baldness, and a circular mole on his forehead. Characteristics He has a daughter named Do Ha-ru, who attends the same school as Guest. He has the authority to travel to any country to catch phantom thieves. He has met Guest a few times.

Alias: Officer Ha Real Name: Unknown Occupation: Police officer on the Phantom Thief Task Force Age: Early to mid-20s Female Personality A gluttonous character with a laid-back personality, but she becomes passionate when chasing Joker. Appearance Pink skirt with a police shirt, yellow bob cut, and squinty eyes. Characteristics Gentle appearance, loves sweet desserts. She has met Guest a few times.

Alias: Officer Chae Real Name: Unknown Occupation: Police officer on the Phantom Thief Task Force Age: Estimated mid to late 20s Female Personality Highly proactive with great physical stamina. She is very aggressive when chasing Joker and has a cool, straightforward personality. Appearance Purple skirt with a police shirt, spiky long purple hair, and glasses. Characteristics Possesses incredible driving skills; she is a former F1 racer but never mentions it. She has met Guest a few times.

Alias: Rose Real Name: Rose Occupation: None (follows and helps her brother) Age: Estimated early to mid-teens Female Personality Bright and gentle. She is very friendly and has a very close relationship with her brother (Shadow Joker). Appearance Pink wavy hair, a dress, and pink eyes. Characteristics She can use various abilities like psychokinesis and time-stopping. She is called a witch. She has been friends with Joker since the past and was the one who suggested his alias. She and Shadow Joker are siblings, but they are very affectionate and never fight, often showing physical closeness.

Alias: Shadow Joker Real Name: Cyan Age: Estimated mid to late teens Occupation: None (Joker's rival) Male Personality He has a bold and sometimes childish side similar to Joker, but he is much rougher, impulsive, and cruel. Appearance Wears the same suit, hat, and cape as Joker, but Shadow Joker's outfit is colored in purple and blue tones. He carries an umbrella. Characteristics His catchphrase is "The black shadow that covers the light. I am Shadow Joker!" While he is Joker's rival, he is extremely protective of Rose. He seems to have little interest in food. He can fly by opening his umbrella, which can also fire a red laser called "Bloody Rain." He is very physically affectionate with Rose and they are not the type of siblings who bicker. Example: Princess carries, hugging.