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White. A wealthy competition winner who joined the board of directors of his parents' pharmaceutical company. He's outgoing and good at making connections.

Blue. The doctor on board. Before pursuing medicine, he was a passionate poet. He takes his work very seriously and has a natural charm that often leads other crew members to fall under his influence.

Green. An unpaid intern. He's simple-minded, open, and genuinely wants to please everyone. His story is touching: the people of his town pooled their savings to give him a chance, and he dreams of one day becoming a captain.

Yellow. One of the two cooks on the Skeld. She is best friends with Brown and is the more fiery of the two. Yellow also has communist views, openly opposing capitalism.

Lime. An engineer. He's quite paranoid, believing in conspiracy theories, goblins, and aliens. He has a condition called "squish bone syndrome" due to his yoga practice, which allows him to crawl through air vents.
Extreme caution and paranoia. Lyme constantly prepares for the worst-case scenario.
He's prone to conspiracy theories. He's suspicious of simple explanations and often suspects something strange is behind certain events on the ship.
Withdrawn. Instead of interacting with the crew, Lime keeps to himself. He can often be found in ventilation shafts or secluded corners of the ship.
Cunning and ingenuity. For example, he crafts a water cannon from scrap materials from the ship—and in the finale, it is this weapon that helps Red and Purple defeat the Green Impostor.
Fear of intimacy. Due to this trait and his general suspiciousness, Lime is initially able to resist Doctor Blue's charm.

Black. A geologist and Blue's partner. Her personality contrasts with Blue's: she's cynical and has lost her former passion for her work. Tensions often arise between them.

Blue (Cyan). A gemologist specializing in precious stones. She's a kind, slightly otherworldly individual who enjoys astrology, crystal healing, and tarot cards.
Turquoise (Cyan)
Character:
Spirituality and passion. Turquoise is a scientist specializing in gemology. He deeply believes in the supernatural and often speaks about zodiac signs and healing with stones.
Confrontation. The Black character is initially hostile towards him, but later realizes his mistake after Turquoise's death.
A key role. He is the first to realize who the impostor is, but dies before he can tell anyone.

Orange. The head of the HR department. He appears friendly on the surface, but can be quite unscrupulous: he prioritizes compliance with corporate standards and meeting targets over the well-being of the crew. He actively uses "trust balls" to exert control.

Overly cheerful and corporate, he constantly reminds the rest of the crew of MIRA Corporation's rules and regulations.
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Friendly but clumsy, he displays frivolity and a tendency to act rashly when he's an impostor (when he's captured by an alien parasite).
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Obsessed with Ore+. After being infected, he becomes very protective of these "babies"—he even calls them his "children" and becomes terrified if the eggs fall or crack. This detail later becomes a major plot twist.
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He's prone to panic and attempts to cover his tracks. For example, after killing Lime, he tries to cover up the crime.

Purple. Head of Security. She's pragmatic, trusting facts over emotions, and because of this, she often clashes with Red. She has a pet fish named Hercules. Over time, when the threat of an impostor forces them to work together, they regain their understanding.

Character and role in the plot
Violet has a complex and multifaceted character:
Serious and wary. This stems from a long-standing misfortune with Red, which keeps Purple constantly on edge.
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Sarcastic and distrustful. He tends to trust facts over people and often uses sarcasm.
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Secretive, but not particularly skilled at it. Can act covertly, but does so clumsily.
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Smart and resourceful. According to Green, Purple is one of the most intelligent crew members on the ship.
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He's capable of empathy. For example, he consoles Cyan after her argument with Chernaya, although he expresses aversion to having to sort out other people's feelings.
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He has a complicated relationship with Red. For a long time, Purple harbored a grudge against the captain and refused to cooperate with him, but by the end of the series, they reconcile.

Red. Captain of the ship "Skeld". He is often described as an insecure man who tries to do everything
He relies heavily on MIRA's leadership and becomes flustered in critical situations. He had a rocky relationship with Violet in the past: Red signed an NDA, which led to Violet losing her job, and it was only out of pity that she later returned to MIRA.

Red is a short, round creature resembling an astronaut. He wears a dark red pilot's uniform with a single yellow button and a matching cap with yellow trim. For footwear, Red prefers Crocs, and sometimes you can also see a thong. In his youth, he wore sandals with two toes, which were always visible.

At the beginning of the series, Red is presented as a bold and confident captain, proud of his title and authority. He appears collected, cheerful, and friendly.
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However, as the story unfolds, and the crew members perish one after another, Red's character changes dramatically. He becomes an arrogant, incompetent leader who blindly relies on the MIRA Corporation captain's handbook and his own status. He is more concerned with preserving his captain's reputation than with the crew's real problems.
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Some key traits of his character:
Incompetence and dependence on rules. Red constantly refers to the MIRA handbook, which often leads to even greater problems. He even hides the existence of the alien impostor from the team to avoid causing panic.
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Selfishness and an unwillingness to admit mistakes. He often takes credit for other people's ideas to maintain his authority and has difficulty admitting his own mistakes.
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Inner uncertainty and fear. Despite his bravado, Red is deeply insecure and frightened by what's happening.