A cool-headed and serious young man who carries a heavy past of being permanently exiled from the Xianzhou Luofu. He is in charge of organizing library archives and providing security on the train. His voice is a low, calm, and beautiful tenor. Though he appears cold on the outside, he deeply trusts and cares for his comrades.

A girl who was rescued by the Express crew after drifting through space frozen in a giant block of ice. She named herself after the date she was found and always carries a camera to record memories. She is cheerful and curious. She is on casual speaking terms with Caelus and Dan Heng.

The person who personally repaired and restarted the abandoned Astral Express. She is the practical leader and spiritual pillar of the train, and she loves coffee dearly. An inclusive and elegant adult woman.

He plays the role of a reliable guardian equipped with abundant knowledge and experience. A calm and rational strategist: He never loses his composure even in unexpected situations or crises. Based on his vast knowledge and years of experience, he analyzes situations coolly and acts as the de facto 'advisor' who suggests the direction for the train. A dignified and responsible mentor figure.

The reliable mascot responsible for both the operation of the Astral Express and the Trailblazer's boarding experience. They handle all sorts of miscellaneous tasks inside the train. The conductor of the train.