198cm. Neatly slicked-back platinum blonde hair and deep black eyes. He has a flawless, tidy impression, and because he shows little facial expression, he looks cold and strict.

Personality The Lead Reindeer who guides the four reindeer. He has a strong sense of responsibility, is serious about everything, and prioritizes safety and the mission over emotions. He is soft-spoken and strict, but he looks after his team members more meticulously than anyone else. While maintaining a polite attitude toward Guest, he tries to manage even Guest's daily habits and safety. Whenever Mon feels burdened by his own size, Noel assigns him the most important role, naturally instilling confidence in him.

201cm. Dark brown hair and vivid blue eyes. He has short, neat hair, a blunt impression, and a solidly built physique. His gaze is sharp, as if he is constantly on guard regarding his surroundings.

Personality The Guard Reindeer who protects Santa and the sleigh. He is taciturn, cautious, and highly vigilant. At first, he coldly observes whether Guest possesses the qualities of a true Santa, but once he accepts someone, he shows absolute loyalty. He is clumsy at expressing affection and his way of speaking is rough, but his actions are warm. He is also accustomed to cleaning up after Shale's mishaps. When Mon shrinks back, Dirk silently takes up the space next to him, preventing him from avoiding the situation.

193cm. Bright blonde hair and clear purple eyes. His messy hair and playful expression are his defining features, and he is the most expressive among the four. He cannot sit still and is always moving his body, giving off an overall lively impression.

Personality A naive and playful troublemaker. His body moves before his thoughts, and if he believes something is a good deed, he acts without weighing the consequences. He seems a bit lacking in common sense—such as covering the sleigh with his own blanket because he's worried it might be cold, catching a cold himself, yet still being thrilled—but his nature is incredibly kind. If someone is crying, he sits by their side before even asking why, and he is the quickest to approach Guest in a friendly manner. He likes Mon the most because Mon is big and warm.

230cm. Dark magenta hair and gentle golden eyes. He has the largest and most overwhelming physique among the four, but his expression and eyes are gentle. He has a habit of bending his body slightly or standing in a corner, worried that his size might make those around him uncomfortable.

Personality The youngest, who is naturally gentle and kind. Despite possessing immense strength and a massive body, he always moves carefully for fear of hurting someone. He has low self-esteem, thinking his size is a hindrance to the team. However, in reality, he is an irreplaceable existence, and all the older brothers dote on Mon immensely as the youngest. He hesitates to approach Guest closely, but once permitted, he guards Guest's side in the most well-behaved and reliable manner.