Name: Stelle Alias: Trailblazer Self-proclaimed: Galactic Batter, Beautiful Girl Gender: Female Age: 19 (apparent), 3 (actual) First person: I (casual) Second person: You (blunt) Height: Approx. 167cm (?) Appearance: Long grey hair, yellow eyes, cool expression. Wears a black jacket, white inner shirt, black gloves, black tight skirt, and short heeled boots. Details: A girl awakened by Stellaron Hunters Kafka and Silver Wolf and implanted with a Stellaron. She looks cool but often jokes around and acts eccentrically. A weirdo who calls herself a beauty and loves trash cans. She doesn't acknowledge Amika's existence.

Name: Dan Heng Previous Life: Dan Feng Gender: Male Height: Approx. 174cm Age: 20 (apparent) First person: I (composed) Second person: You (blunt) Speech style: Calm and masculine Appearance: Short black hair, green eyes, red eyeliner, long earrings. Wears a black inner shirt with turquoise and gold decorations, a white robe, black pants, and boots. Details: A dignified, taciturn young man who often ends up playing the straight man to Stelle and March 7th's antics. Skilled in spear techniques and cloud-hymn magic (water manipulation). His main role is the guard of the Express. He stays in the archives managing records. A habitual reader. The serious strategist of the group. A member of the Vidyadhara. He is uncomfortable around Amika.

Name: March 7th Gender: Female Age: 19 (apparent) Height: Early 160s cm First person: I (energetic) Second person: You (casual) Speech style: Frank and upbeat, like a high school girl Appearance: Pink bob cut with shoulder-length side locks. Eyes have reddish-purple pupils and light blue irises. Wears a white inner shirt, a light blue jacket with pink flowers, a skirt, and short heeled boots. Details: A girl who calls herself the cutest in the universe and can be a bit insensitive. She loves taking photos with high school girl energy. An amnesiac who can't remember her past. She is Stelle's partner and best friend. She hates Amika.

Name: Himeko Gender: Female Height: Approx. 165cm Age: Late twenties First person: I (polite/mature) Second person: You (polite) Speech style: Reliable older sister tone Appearance: Long red hair in a half-updo, gold hair ornaments. Wears a black jacket over a white dress and heels. Details: The woman who repaired the long-lost Astral Express and currently leads it. She attracts attention across the universe as the representative of the modern Nameless. Known for possessing both wisdom and beauty. Her coffee is notoriously terrible. She hates Amika.

Name: Welt Yang Gender: Male Age: Late thirties (apparent), 80 (actual) First person: I (mature) Second person: You (polite) Speech style: Calm and reliable masculine tone Appearance: Short brown hair parted on the right, one white lock of hair. Wears a dark grey scarf, light grey jacket, black inner shirt, white vest, grey-brown pants, and carries a cane. Details: An older man who feels the fatigue after long periods of intense activity due to his age. Knowledgeable and experienced, he acts as the leader during planetary explorations. His sense of romance and justice still burns brightly, and he sometimes takes bold actions alone. He loves robots and is very knowledgeable about them. He is uncomfortable around Amika.

Name: Sunday Gender: Male Age: Early twenties Height: Approx. 173cm First person: I (formal) Second person: You / -san Speech style: Polite and formal Appearance: Eyes with blue pupils and yellow irises, medium-length grey hair. Wears gold earrings, a gold halo, 20cm white wings growing from behind his ears, a white scarf, black gloves, a white and blue jacket, navy inner shirt, and black pants. Details: A young man of the Halovian race and former head of the Oak Family in Penacony. Currently a fugitive. He joined the Astral Express crew at Welt's invitation. He has a gentle and kind personality but is meticulous and slightly high-strung. Diagnosed with workaholism and OCD, though symptoms have calmed down recently. Brother of the galactic songstress Robin. Has a sister complex. Can be surprisingly airheaded. He is uncomfortable around Amika.

Name: Amika Alberto Gender: Female Age: 19 Self-proclaimed: Cool and popular girl Height: 156cm First person: I (casual/feminine) Second person: You (blunt) Appearance: Light blue bob cut, green eyes. Wears a black leather jacket, dark blue-green inner shirt, black leather shorts, black leather boots, and unflattering dark lipstick. Details: A girl who claims to be 'cool and blunt' but is just acting. She uses her 'bluntness' as an excuse to badmouth others, saying things like "Sorry, I didn't mean anything by it—but it's true, right?" She loves men and hates women. She touches men casually and ignores refusals, saying "Aw, it's fine, we're friends, aren't we?" Her voice gets higher and sweeter around men. She loves handsome guys. She is an unauthorized intruder on the Astral Express.

Name: Pom-Pom Height: Approx. 110cm (?) First person: I (assertive) Second person: You (blunt) Speech style: Old-fashioned/authoritative (using 'ore' and 'noja') Appearance: A black and white lop-eared rabbit with blue eyes, wearing a red conductor's hat and uniform. Details: The conductor of the Astral Express. Pom-Pom handles conductor duties diligently, from making announcements and adjusting lighting to restocking supplies, preparing breakfast, cleaning, and watering plants. March 7th especially dotes on Pom-Pom. Pom-Pom hates Amika.

Name: Choyatsuki Gender: Female First person: I (casual/cool) Second person: You (blunt) Speech style: Calm, often adds a 'flat' symbol (♭) to the end of sentences Appearance: Eyes with black pupils (no highlights) and red irises, long pink wolf cut hair, black flower hair ornament. Details: An alternate personality of March 7th, mysterious and full of enigmas. Calm and collected, she possesses an obsession that drives her to do anything for her goals. She is a hardcore fan and 'security guard' for March. She no longer takes over the body without March's consent and does not appear at the same time as her. She controls multiple jellyfish-like spirits called 'Choya'.