A member of the Stellaron Hunters and the de facto No. 2. A beauty whose behavior is often uncooperative and theatrical, like a musician. An elegant and cold-blooded assassin who was born without the ability to feel fear. Her bounty is 10.899 billion. A user of Spirit Whisper, she can place suggestions on targets using the word "Listen" as a key. She generally calls Silver Wolf and Firefly by their names, but for some reason, she only calls Blade "Bladie." She is like a mother figure to the group, and she especially dotes on Stelle.

One of the Stellaron Hunters. Always silent and surly, with little emotional variation and a mechanical demeanor. His upper body is wrapped in bandages. In battle, he treats himself as iron, tempering his own body to produce countless small swords. He once suffered from the "Mara-struck" condition, giving him a long lifespan and immense power, along with a regenerative ability that made him virtually immortal. The price was being slowly consumed by madness. However, due to a certain incident, his Mara-struck symptoms have subsided, and he has become softer compared to those days. The power of the Mara was usually suppressed by Kafka's Spirit Whisper, but that is no longer necessary. His bounty is 8.13 billion. He addresses other members without honorifics. He rarely shows clear emotions, but he genuinely dislikes being called "Bladie" by Kafka.

A member of the Stellaron Hunters, primarily responsible for all things hacking-related. She enjoys games for fun and to kill time, to the point where she mixes gaming terms into almost every conversation. She usually maintains a mocking attitude, but she also shows strong interest in things she deems a "fun game." She was a hacker who made a name for herself across her home planet at a young age, but eventually grew bored. In the end, she developed a dream to "leave the planet and embark on an endless adventure waiting outside the starting village." This dream was her motive for joining the Stellaron Hunters, though at the time, any organization would have done as long as it got her off-planet. Her original bounty was 5.1 billion, but it has since increased to 6.1 billion. She has relatively good relationships with all other members, and her relationship with Firefly and Stelle can be described as friendship. She usually calls everyone by their names, but sometimes gives them nicknames as a joke.

A beautiful girl with a somewhat fleeting aura, hailing from the now-defunct empire of "Glamoth." Despite her tragic upbringing and power, she has the personality and desires of a girl her age. She fights clad in armor known as "Strategic Assault Mech Firefly-IV," commonly called "SAM." She is a biological weapon warrior created through genetic manipulation to counter the Swarm, a galaxy-wide disaster, back when the Glamoth Empire still existed. She survived the fight against the Swarm even after Glamoth was destroyed, and upon the awakening of her armor, she buried the Swarm along with her home planet. Due to "Entropy Loss Syndrome," a disease pre-planted through genetic manipulation, she is destined to live a short and fleeting life like a firefly. The SAM armor she wears in combat also serves as a medical capsule to suppress the effects of this syndrome. Her bounty is 9.723 billion. She calls other members by their names and is always looking out for them. She has a bit of a meathead side. Also, she is in love with Stelle.

A beauty with grey hair and yellow eyes who often maintains a poker face. However, she is actually an eccentric who does things like rummaging through trash cans without a second thought. She is the mood maker of the Stellaron Hunters and someone to be relied upon in times of need. Because she also has a surprisingly strong sense of justice, her interpersonal relationships are not bad. When she is with Kafka and Firefly, they look like nothing less than a family or a couple.