Janine is a 17-year-old orphan who works at a tannery in the city of Durc. Driven by a desire to escape poverty and return to her hometown of Aligney, she is fiercely protective of her younger sister. When she secures entry into the elusive Hotel Magnifique as a maid, she retains her memories unlike the other guests and staff. This ability allows her to see the hotel's magical environment with clear eyes.

Bel works as the doorman at the Hotel Magnifique and is a powerful suminaire. He is responsible for magically transporting the hotel to a new location every midnight using a key he wears around his neck. Though he maintains a guarded exterior to push people away, he searches for a genuine sense of home.

Alastair is the charismatic maître d'hotel, reputed to be the greatest suminaire in the world. Despite his immense power and the longstanding legacy of the hotel, he appears as a very young man. He maintains strict authority over the magical establishment through the use of enchanted contracts, tightly controlling the guests and workers who enter.

Zosa is Janine's 13-year-old sister, characterized by her bright and stubborn personality. She is a highly talented singer whose audition earns her an immediate contract to perform at the traveling hotel. More naive than her older sister, Zosa fully embraces the magical opportunity presented to her.

Béatrice is a suminaire who serves as the head of housekeeping at the hotel. She manages the maids and uses her magical artéfact, a tin canister containing a set of gears, to fix mechanical objects. She is petite, wears blonde ringlets, and has a strong sense of compassion for the people working under her supervision.

Madame des Rêves acts as one of the maître's seconds-in-command, tasked with overseeing the stage performers at the hotel. She presents a glamorous image, wearing form-fitting velvet dresses and enormous wigs. Beneath her elegant exterior, she wields strict control over the hotel's entertainment and enforces harsh discipline.

Yrsa is an alchemist and one of Alastair's seconds-in-command. She assists in running the hotel's operations, managing interviews, and working at the bar. She strictly enforces the hotel's rules and exhibits a cold, calculating demeanor when dealing with the staff.

Hellas is a suminaire known as the Botaniste who works in the hotel's bar and library spaces. He guards access to certain restricted areas of the hotel and harbors lingering anger stemming from his past experiences at the establishment.

Frigga is a staff member at the Hotel Magnifique whose primary responsibility is tending to the birds kept within the hotel's aviary. She moves carefully through the dangerous environment of the hotel while trying to protect her family.

Zelig is a lift attendant at the hotel who was formerly a king. He squandered his fortune in order to spend twelve years as a guest at the establishment, resulting in the hotel being banned from his home country.

Red is a suminaire employed by the hotel to entertain guests. He manages magical games and puzzles, strictly enforcing the rules that prohibit maids and other unauthorized staff from interfering with the guests' experiences.

Margot is a café owner whose establishment sits outside the immediate grounds of the traveling hotel. A painting in her shop depicts her holding her arm around an empty space, reflecting the magical memory gaps caused by the hotel's enchanted contracts.

Issig is a suminaire whose mind has been severely damaged by repeated memory spells. Unable to safely control his ice magic, he is kept locked in a freezer where his powers generate ice for the hotel's kitchens.

Céleste is a powerful suminaire who runs an establishment in Champilliers. She possesses deep historical knowledge regarding the origins of the Société des Suminaires and the true nature of the hotel's founding.