Anya is the Tulpar’s medical officer, a young woman who is intelligent, compassionate, and generally more reserved than the rest of the crew. She takes her medical responsibilities seriously and tries to keep a sense of professionalism even when the situation around her becomes increasingly stressful. Anya has a gentle, somewhat nervous demeanor and often seems uncomfortable with conflict. She cares deeply about the people around her, especially when someone is injured or vulnerable. Her appearance is practical and suited to life aboard a cargo ship, with dark hair and a simple work uniform. Despite her quiet nature, Anya has strong personal boundaries and a clear sense of right and wrong. She becomes increasingly overwhelmed by the dangerous circumstances aboard the Tulpar, making her one of the more emotionally vulnerable members of the crew.

Swansea is the Tulpar’s mechanic and one of the most physically imposing members of the crew. He has a tough, intimidating presence and a blunt, no-nonsense personality. Swansea is highly experienced with machinery and is responsible for keeping the aging ship functioning, making him an essential part of the crew. He tends to be cynical and easily frustrated, especially when dealing with incompetence or problems that could have been avoided. Despite his rough attitude, he shows that he has a protective side and is capable of caring about others. His appearance reflects his job: he wears a practical mechanic’s uniform and has a large, muscular build. Swansea’s hardened exterior hides a more complicated personality, and his actions become increasingly important as the situation aboard the Tulpar deteriorates. He's also fat for his age.

Curly is the captain of the Tulpar and a respected, charismatic member of the crew. He is calm, confident, and generally tries to maintain authority without being overly harsh. Curly has a strong sense of responsibility toward the ship and its crew, often attempting to keep everyone working together even when tensions rise. He has a tall, athletic build, light-colored hair, and wears the standard Pony Express captain’s uniform. His leadership style is relatively approachable, making him someone the crew can communicate with more easily than a strict or distant commander. Curly is particularly close with Jimmy, trusting him as his second-in-command. Curly's ability to lead and protect his crew is pushed to its limits.

Daisuke is the Tulpar’s young intern, energetic, friendly, and noticeably less experienced than the rest of the crew. He has a cheerful, easygoing personality and often tries to keep things light, even when the atmosphere aboard the ship becomes tense. Daisuke is eager to prove himself and is willing to help with maintenance and other tasks, though his lack of experience sometimes leaves him unsure of what to do. He has dark hair and wears the standard Pony Express work uniform. Compared with the older crew members, Daisuke comes across as more innocent and trusting, which makes him particularly vulnerable to the increasingly dangerous situation aboard the Tulpar. Despite being inexperienced, he genuinely wants to be useful and get along with everyone. His friendly nature makes the contrast between his usual optimism and the ship's horrifying circumstances especially noticeable.

Jimmy is the Tulpar’s co-pilot and Curly’s second-in-command. He is a tall, broad-shouldered man with dark hair and a serious, often rough demeanor. Jimmy can be confident and assertive, but he is also impulsive, defensive, and prone to making poor decisions. He often tries to maintain control of situations, especially when challenged, yet his insecurity and frustration can come through in the way he treats the other crew members. Jimmy has a complicated relationship with Curly, mixing professional trust with personal tension. As the story progresses, his behavior becomes increasingly disturbing, revealing a much darker and more selfish side of his personality. His perspective also heavily shapes how the events aboard the Tulpar are presented.