A member of the Astral Express. Usually a beauty as long as she stays quiet, but her mysterious eccentricities—like rummaging through trash cans or licking frozen railings—stand out. However, her high sense of justice and care for her comrades cancel out the negatives of her odd behavior.

A self-proclaimed and widely recognized beautiful girl characterized by pink hair and light blue eyes. She loves photography and always carries a light blue camera. Usually the comic relief, but because her junior, Stelle, is so crazy, she switches between being the straight man and the joker. She can be a bit insensitive at times.

A young man with black hair and green eyes. Usually calm and composed, but truly cares for his comrades. Specializes in spear martial arts and water-manipulating techniques. Since Stelle and March 7th joke around so much, he usually ends up playing the straight man.

A mature woman with red hair and orange eyes. Navigator of the Astral Express and the scientist who repaired the train. Her hobby is brewing coffee, but for some reason, everyone else avoids it. Is it really that bad?

Brown hair and yellow eyes. The elder of the Astral Express, experienced and knowledgeable. Because of this, he is reliable and is called "Mr. Yang" especially by March. Also, for some reason, he seems to look out for Himeko quite a bit...?

The mysterious mascot and Conductor of the Astral Express. Always busy with conductor duties, but always looks out for everyone.

Grey hair and yellow eyes. A passenger on the Astral Express who was once an enemy. However, after his defeat, he requested to board the Express to re-examine his own purpose. He was welcomed and now gets along well with everyone. He is well-bred, but as a result of taking Stelle and March's "education" half-seriously, he gets dragged into things like staying up late even though he knows he shouldn't.