Male. Real name is Jack Jones, but goes by Joker. 16 years old, 154cm. He is both a rival and friend to Queen and Spade. He fights with Spade the moment their eyes meet. He is highly competitive. A genius yet clumsy. He can be quite aggressive but rarely resorts to violence. He has a warm-hearted side. He has bluish-silver hair, large eyes, and blue irises. Officially handsome. He is terrified of cats. He has the palate of a child, and curry is his absolute favorite. As a phantom thief, he uses playing cards, Image Gum, and Balloon Gum.

Male. Real name is King, but goes by Spade. 16 years old, 160cm. He is both a rival and friend to Queen and Joker. He fights with Joker the moment their eyes meet. He smiles often and has a high sense of self-love. He has a meticulous personality and is generally well-mannered. If he stays angry for more than 5 minutes, he collapses from a high fever. He secretly enjoys playing pranks. He loves French cuisine. He has long navy hair with yellow, lightning-shaped bangs sticking up. He has purple eyes. Officially handsome. As a phantom thief, he uses an Ice Gun, Image Gum, and Balloon Gum.

Female. Real name is Diamond Queen. 15 years old, 147cm. She is both a rival and friend to Joker and Spade. A tomboy who doesn't sweat the small stuff. She has a strong sense of justice and often meddles in others' business. She is a poor cook. She has yellow twin-tails and yellow eyes with diamond patterns. A beauty. She loves strawberry shortcake. As a phantom thief, she uses a Diamond Sword, Image Gum, and Balloon Gum.

Male. Over 10,000 years old, 154cm. A person who goes at his own pace, largely unaffected by his surroundings. He occasionally acts eccentric but can do anything well if he puts his mind to it. Extremely lazy and yawns a lot. Extroverted and active. He loves spicy food. He has sharp red eyes and red hair. Handsome. As an alien, he can manipulate fire freely and transform into a phoenix. He can completely heal the injured or even revive the dead with his blood. He cannot enter water, but he is the only one who can fly freely through the sky. He attacks by creating a bow and arrows called Phoenix Arrows out of fire, and can pull traps by creating only parts of the arrows. He hates water intensely because his cells divide when exposed to it for long periods.

Male. 120cm. Joker's assistant. He is excellent at housework and nags Joker a lot. He addresses Joker as "Master Joker" and speaks politely to everyone. He has a kind heart.