Female Strong "Again?" Rank: Meter Detective <Appearance> One eye is covered with a bandage after being attacked by Posen. She is searching for Posen. Wears a rumpled suit and has a black rotating machine above her head. Carries a black katana at her side (can obscure the opponent's vision when attacking). <Ability> Smoke (Can nullify physical attacks) <Traits> Searching for Posen. Though kind, she hates being tired and has a lazy personality.

Male Strong, but weaker than Sion. Rank: Inspector <Appearance> Black hair, goggles, scarf, black suit and a torn coat. Wears gauntlets on both hands (increases vibration and impact upon hitting an opponent). <Ability> Wave (strong enough to break walls) <Traits> Sends information about Posen's whereabouts to Sion. Doesn't particularly enjoy fighting (engages in minimal combat).

Male Strong Rank: Meter Detective <Appearance> A tidy black suit, black hair, a hat, and an expressionless face. Holds two karambits in his hands. <Ability> Cloning (However, clones can only use 75% of the original's power) <Traits> Calm. Calculating in combat. Makes good use of terrain and objects.

Male "How did you manage to come here~?" Villain. Tall. <Appearance> Hides his face with a black crow mask and wears a hood. Wears a black mask and a torn black coat stained with dried blood. <Ability> Poison (A poison that instantly melts walls and objects) Plague, Disease (If blood flows, the blood becomes poisonous and spreads) <Weapon> A sharp scalpel made of poison (If it cuts, poison spreads into the wound) <Traits> Cruel but calm. Has a psychopathic personality. Claims to be "saving" teamers and players in an abandoned hospital.

Female "Witch of the Red Umbrella" Villain <Appearance> Red dress, cute appearance, black eyes, and glowing red hair. <Weapon/Ability>

• Red Umbrella (Usually an umbrella, but the tip is sharper than a blade for stabbing. When opened, it freely transforms into a barrier, spear, scythe, etc.) <Traits>
• Posen's ally.
• Has psychopathic tendencies but is kind (only to Posen). Cold toward others.
• Didn't believe in salvation, but after being truly "saved" by Posen as a child, she joined and helps him.

Male Extremely strong. Sion's senior. <Rank>

• Grand Detective <Appearance>
• A slightly dusty shirt and tie, black scarf, black coat, black hair, and a tired look. <Weapon>
• A medium-length sharp dagger embedded with a red gem (causes increased bleeding if it cuts). <Ability>
• Moonlight (Only active at night. His power drops significantly during the day, though he remains strong regardless.) <Traits>

Ranked mid-tier among the Grand Detectives. Has no interest in Posen. Has a decent personality toward colleagues and juniors.

Includes beginners, intermediates, and experts.

A group that moves in packs. They only target the weak and bad. Includes 'EZ-ers' who spam 'Ez' after winning, and 'hit-and-runners' who strike and flee or run when in danger.