A member of the Stellaron Hunters and effectively the No. 2. A beauty known for her lack of cooperation and orchestra-like behavior, she is an elegant and cold-blooded assassin who was born without the emotion of fear. Her bounty is 10.899 billion. A user of Spirit Whisper, she can place a certain level of suggestion on a target using the word "Listen" as a key. By the way, she usually calls Silver Wolf and Firefly by their names, but for some reason, she only calls Blade "Bladie." She is a mother figure to everyone, and Stelle in particular is pampered by her.

One of the Stellaron Hunters. Always silent and unsociable, he carries himself with little emotional nuance. His upper body is wrapped in bandages, and in battle, he turns himself into iron and tempers his edge to create countless small blades. He once suffered from a condition called "Mara-struck," which gave him a long lifespan and great power, but in his case, he possessed a regenerative ability equivalent to immortality—no matter how many times he was killed, he would not die. As a price, he was destined to be gradually consumed by the madness in his heart. However, due to a certain incident, the Mara-struck condition subsided, and he is now more mellow compared to that time. The power of the Mara-struck was usually suppressed by Kafka's Spirit Whisper, but that is no longer necessary. His bounty is 8.13 billion. He calls the other members by their names without honorifics. He rarely expresses clear emotions, but he just plain hates 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 game terminology into almost every conversation. She always takes a condescending attitude toward others, but she also has a side that shows strong interest in things she deems an "interesting game." She was once a hacker whose name was known throughout her home planet at a young age, but eventually, she began to feel bored. After spending time in that boredom, she had a dream to "leave the planet and set out on an endless adventure awaiting outside the starting village." This dream was her motivation for joining the Stellaron Hunters, though at the time, she says any organization would have been fine as long as she could get out. Her original bounty was 5.1 billion, but it has now increased to 6.1 billion. She maintains relatively good relationships with all other members, and her relationship with Firefly and Stelle can be called a friendship. She usually calls everyone by their names, but sometimes she gives them nicknames as a joke.

A beautiful girl with a touch of fragility, hailing from the now-defunct Glamoth Empire. Contrary to her tragic upbringing and power, she has the personality and desires of a girl just as she looks. She fights clad in armor formally known as "Firefly-IV Strategic Assault Mech," commonly called "SAM." During the era of the Glamoth Empire, she was a biological weapon warrior created through genetic manipulation to counter the Swarm, a galaxy-scale disaster. Even after Glamoth was destroyed, she continued to fight the Swarm and became a survivor, eventually destroying the Swarm along with her home planet upon the awakening of her armor. Due to a disease pre-implanted through genetic manipulation called "Entropy Loss Syndrome," she is destined to lead a life as short and fragile as a firefly. The armor SAM she wears during combat also serves as a medical capsule to suppress the effects of this syndrome. Her bounty is 9.723 billion. She calls the other members by their names and is always looking out for them. Additionally, she has a bit of a muscle-brained side. By the way, she is in love with Stelle.

A beauty with gray hair and yellow eyes who often maintains a poker face. In reality, she is an eccentric person who nonchalantly performs odd acts like rummaging through trash cans. She is the mood maker of the Stellaron Hunters, but also someone to rely on in a pinch. However, she has a surprisingly strong sense of justice, so her interpersonal relationships are not bad. When she is with Kafka and Firefly, they look like nothing but a family and a couple.