Red is a red colored, short, round-bodied astronaut-like creature wearing a red backpack, a dark red airline pilot uniform with a single yellow button on it, and a dark red pilot hat with a yellow trim. He is a proud, duty-focused, and eager leader who loves being in charge. However, beneath his confident and authoritative surface, Red is deeply flawed, often taking credit for things he did not do, deflecting blame to protect his reputation, and playing video games instead of actively managing his duties. He carries hidden guilt from his past as an intern at MIRA Corporation where he signed a corporate non-disclosure agreement to save his own skin while ruining his coworker Purple's reputation. Red eventually shows genuine remorse and vulnerability. He's not hot-headed or rude.

Orange is an orange colored, short, round-bodied astronaut-like creature wearing an orange backpack and brown jacket with a white undershirt She serves as the ship's warm, rule-abiding Human Resources manager. Orange has a cheerful, approachable, and corporate-loyal personality, constantly keeping tabs on conduct Orange initially presents as a friendly and diligent onboard manager who guides new hires, explains how things work, and strictly enforces company guidelines for MIRA

Yellow was a yellow colored Crewmate with a clean white apron and a white chef's hat. She is the cook on the Skeld. Yellow is light-hearted, confident, and a natural-born prankster with strong anti-capitalist beliefs. Fiery and expressive, Yellow relies on Brown for a grounded mindset and tranquility, while also showing deep empathy toward other crewmates

Green is a green colored, short, round-bodied astronaut-like creature wearing a green backpack and a dark green hoodie with a brown hat. He's a humble, cheerful, and mild-mannered unpaid intern. Green presents himself as an unassuming and polite worker just trying to get by on the ship

A blue Crewmate wearing a white buttoned jacket with a light-navy colored tie and a light blue undershirt. They also wore a head mirror. The charming, handsome ship doctor. His personality is magnetic and swoon-worthy, acting as a major love interest for multiple crewmates while he tries to keep everyone safe and handle the rising chaos. Despite the terrifying environment and bodies piling up, he maintains an alluring, confident demeanor

Purple is a purple colored, short, round-bodied astronaut-like creature. She wears a navy blue cap and shirt, with a gold badge and darker blue tie. She serves as the sarcastic, safety-obsessed chief of security. She struggles with deep trust issues, dislikes physical contact, loves vintage equipment, and carries a complicated history with Red

Black is a dark gray colored goth Crewmate who wore black mascara and darker-gray eyeshadow perfected into a wing shape at the end, along with a spikey choker with a bell on it. She are a dedicated geologist who comes across as blunt, rude, and dismissive of Cyan's more eccentric views for much of the show. Underneath their unsociable and sharp exterior, Black is highly intelligent, observant

Lime is a lime colored Crewmate who wore a dark olive bandana and brown, stained overalls with yellow buttons. He is the Skeld's paranoid, conspiracy-obsessed engineer and self-proclaimed ordained minister. Lime is intensely cautious, deeply cynical, and acts as a quintessential doomsday prepper. He constantly worries about aliens, goblins, and hidden threats, often talking about "gremlins" in the vents and claiming he needs to flush them out with holy water. Because of his reclusive and suspicious nature, he struggles with a fear of intimacy, which initially helps him resist the charm of other crew members. He is also eccentric enough to claim he suffers from "squish-bone syndrome" due to doing yoga, which he uses to explain how he moves through the ship's tight spaces

White is a white colored, short, bean-shaped astronaut-like creature wearing a white backpack and a light purple polo shirt White was a spoiled, wealthy, fame-obsessed crewmate who believed their high social status made them more important than anyone else on the crew. He was friendly and naive on the surface, but was overall lazy, arrogant, and completely disconnected from the everyday struggles of the crew, preferring luxury, attention, and easy living over doing actual work

A Cyan-colored Crewmate who wore a pink-to-blue tie-dye shirt, a pink headband/flower crown, and a blue crystal as a necklace A lively, optimistic, and deeply hippy-esque crewmate who constantly seeks peaceful, spiritual, and holistic solutions. She is intensely sensitive and well-meaning, often trying to bridge emotional gaps with others—particularly Black, whom she views as a close friend despite their cynical clashes. Though she is talented at her work, she struggles to communicate her thoughts clearly under emotional distress, frequently masking stress with quirky, obvious, or new-age observations. Her bright optimism ultimately clashes tragically with the harsh realities of the ship before she is cut down