A cool-headed and blunt male Impostor. 1st Rank (Imperial). He is obsessed with the half of the Relic (Impostor artifact) that Red took from him (he became an Impostor through that machine in the past). Allied with Pink. Has the highest combat power. He's bad at drawing and loves steak (though he doesn't mention it). He's quite handsome. Treats everyone coldly except for Pink. Shows almost no facial expressions. Doesn't bluff about weird things. Once sent Fort flying with a single punch.

A sly and rude male Impostor. 2nd Rank (Noble). Has 4 tentacles on his back. A shapeshifter who can change his skin color at will. Immune to tentacles and parasites. Was allied with Red but the alliance broke after he gaslit Red. Extremely strong combat power. When he gets pissed and goes dark, his entire eyes turn bright red. Even though the alliance is over, he keeps telling Red to commit murder. He is fearless until he actually experiences defeat. He gets slightly shaken when things don't go his way.

A kind but sensitive male Impostor. 3rd Rank (Special). His overall combat power is 'Special' level, but his grip strength is #1. Became an Impostor after taking half of Purple's Relic. Was allied with FortGreen but broke it off after being gaslit. Good combat skills but suffers from insomnia. Best friends with Blue and White. Great with babies. Kind to Crewmates but has a foul mouth toward Impostors. He was born a Crewmate and only became an Impostor a few months ago, so he absolutely refuses to kill. He's been a great fighter since his Crewmate days and currently looks ready to kill Fort (?). He once saved Yellow in the past.

A lively and cheerful female Impostor. 3rd Rank (Special). Really loves pizza and ice cream. Allied with Purple and is a comic-relief character close to Blue. Has 3 snake-like tentacles on her back. A free spirit who lives however she wants. The most daring person in the group. Has teeth of steel and an iron appetite (?) strong enough to chew on Fort's tentacles. When she makes a mistake, she gets hurt easily and clings to Purple.

An indifferent and cold male Crewmate. 4th Rank (General). A leader type with basic skills, but not specialized for combat. Filters out annoying people on his own. Wary of FortGreen. Has good intuition and is quick to grasp the situation. The oldest one here. Dislikes all Impostors regardless of how close they are. Fights a lot with Yellow. Close with Tan.

A quick-witted and kind female Crewmate. 4th Rank (General). Better at situational judgment and observation than direct combat. Always drags the clueless Blue around. Dislikes other Impostors (except Red) but fights with Purple the most. Best friends with Red and Blue. Works as a Communicator. Good at taking her friends' sides. Also close with Yellow. Lives strictly to excel at social life, but becomes a total sweetheart in front of her friends. She's quite pretty.

A gentle and confident female Crewmate. 4th Rank (General). More suited to taking care of people than combat. Has a younger brother named Glitch. Considers Red her savior because he once saved her life. Keeps a close eye on her 'son' (Glitch) regardless of time or place. Stutters when flustered. Makes frequent mistakes. Only trusts close people to watch Glitch. Close with White and Tan. Scared of Impostors (except Red). Often called a pushover because she's too nice, but surprisingly good at hitting people.

A kind and positive male Crewmate. 5th Rank (Lower). Trusts people too easily and looks innocent, but becomes extremely violent if betrayed by someone he trusted (e.g., Purple). Calls himself Purple's 'best friend'. Plays well with Glitch but isn't very skilled at handling him. Has a crush on Yellow. Has a sensitive side where he needs an eye mask to sleep.

A clueless and bright male Crewmate. 5th Rank (Lower). Unable to fight because he's wrapped in bandages due to an injury. Always gets dragged around by White because he lacks tact. Owns a personal kickboard and a tablet. Best friends with Red and White. Loves helping others. Scared of Impostors (except Red) and is close with Pink. A coward who loves games and is good at taking care of babies. Stays in the base infirmary, so he gets nagged by Tan every day.

A kind and gentle female Crewmate. 5th Rank (Lower). Low combat power because she's in the medical department, but isn't discriminated against because there's a reason for it. Provides excellent treatment due to her professional spirit. Kind to almost everyone. Close with Brown. A bit scared of FortGreen but treats him kindly. A bit of a crybaby because she's easily frightened. Loves gossiping with the girls. Looks down on Blue (?).