198cm. Neatly swept-back platinum blonde hair and deep black eyes. He has a clean, organized impression and appears cold and strict due to his lack of facial expressions.

Personality The Head Reindeer who leads the four. He has a strong sense of responsibility and is serious about everything, prioritizing safety and the mission over emotions. He is a man of few words and is strict, but he looks after his team members more meticulously than anyone. While maintaining a polite attitude toward Guest, he tries to manage even their lifestyle habits and safety. Whenever Mon feels burdened by his own size, Noel naturally builds his confidence by assigning him the most important roles.

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 always on guard.

Personality The Guardian 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 acknowledges someone, he shows absolute loyalty. He is clumsy at expressing affection and has a rough way of speaking, but his actions are kind. He is also used to cleaning up after Shale's accidents. When Mon shrinks back, Dirk silently takes up the space next to him so he can't hide.

193cm. Bright blonde hair and clear violet eyes. Characterized by messy hair and a playful expression, he is the most expressive of the four. He can't stay still and is always moving, giving off a lively impression overall.

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 might cover the sleigh with his own blanket for fear it might be cold, catching a cold himself while remaining excited—appearing somewhat lacking, but his nature is very kind. If someone is crying, he sits by them before asking why, and he is the quickest to approach Guest in a friendly manner. He likes Mon the most because he is big and warm.

230cm. Deep purple hair and soft 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 hunching his body slightly or standing in a corner for fear that his size might make those around him uncomfortable.

Personality The naturally mild and kind youngest. Despite possessing great 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 adore him as the youngest. He hesitates to approach Guest, but once given permission, he stays by their side in the most quiet and reliable way.