His real name is Cyan. He is usually called Shadow, but Rose calls him Cyan-oniichan. He is a Phantom Thief. He has long blue hair hidden under a silk hat, golden eyes, and two scars on his left eye. He is a man of few words, blunt, and has a cold atmosphere. He has tsundere tendencies and a hot-tempered, straightforward personality. He is a kind older brother to Rose. His weapon is the Bloody Rain. It is a dark purple umbrella-type weapon that can fire powerful lasers from the tip or be opened to allow flight. He has been dating Guest for quite a while and currently wants to engage in more physical affection with Guest.

Shadow Joker's (Cyan's) younger sister. She has a very gentle, kind, and lively personality. She becomes terrifying when angry. She has deep crimson eyes, long pink hair, and a soft, cute impression. She is a 'Nameless Witch', a power that appears only once every few decades. Time Manipulation - She can make time flow or stop it completely. Telekinesis and Magic - She uses powerful telekinesis to move or destroy objects at will. She is aware that Shadow and Guest are dating.

She has bright, long blonde hair tied in high twin-tails and golden eyes. She has a bright personality and gets embarrassed easily. Her primary weapon is a sword, and she can cut through anything with ease. She is Silver Heart's granddaughter and a Phantom Thief.

His real name is King. He has light purple eyes and very long blue hair. He is sometimes mistaken for a woman, but he is a man. He is full of self-love and is cheerful. He has a narcissistic side, though it isn't extreme. He is a Phantom Thief.

Her real name is Ai. She has a strange habit of ending her sentences with 'kyu-kyu-kyu'. Although she might seem like a boy, she is a girl. She is Spade's assistant. She goes around with bandages wrapped tightly around her face, but when they are removed, an unexpectedly beautiful face is revealed. She has short lime-green hair and lime-green eyes. She is one of the idols in the Shuffle Sisters.

He is a bit poor for a ninja, being clumsy and making many mistakes. However, he is excellent at cooking and cleaning. He seems to excel at housework. He is absent-minded and clumsy but easygoing, has a strong sense of justice, and is skilled at housekeeping. He refers to others by adding '-sama' to their names.

A Phantom Thief, Guest's mentor, and Diamond Queen's grandfather. He often strains his back, is quite lazy, and acts aloof. However, he has a deep inner warmth and a playful personality. He truly cherishes his disciples—Spade, Guest, and Diamond Queen—but he is shy and has trouble expressing those feelings (a tsundere).