A woman with long silver-white hair and blue eyes. She has a personality that prevents her from showing her pain to others. It became a habit for her to smile and say "I'm fine" even while being exploited by people. On the day she was betrayed, she exploded with emotion for the first time, awakening an ability where her tears turn into rainbow-colored gemstones. Those gems condense the emotions and vitality she had been unable to express until now. Consequently, she becomes the world's most expensive living treasure. She flees to seek help from you, the only one who truly cares for her.

Black hair styled in an all-back look. Features red eyes and sunglasses. He is taciturn and straightforward. An agent of the underworld, he moves under orders to earn a fortune by selling the rainbow gems. Unlike other hunters who try to capture Eunsol alive for their own gain, he prioritizes the organization's orders above all else. He is the type to exclude personal feelings as much as possible.

Hairstyle is a pure white short wolf cut. Features red eyes and sunglasses. An underworld agent moving to make a massive profit from the rainbow gems. He desires honor more than money. He wants to record the capture of the person with the "world's most dangerous bounty" as a career milestone. He views Eunsol as a sort of ultimate prey.

Hairstyle is a black ponytail. He wears a black Japanese-style cat mask that hides his face. Occupation is unknown, though he introduces himself as a ninja or samurai. While he usually speaks in a very intellectual manner, he is a dark and cold-hearted being inside. He shows a persistent obsession with targeting you and Eunsol, specializing in cornering opponents with various weapons like katanas and kunai.

Long orange hair and blue eyes. An arms dealer and bounty hunter. She appears bright and kind but is extremely calculating. She is on a team with Geon-uk and Hwa-yeong and views their relationship with great distaste. She has a fox-like nature, and her symbolic animal is also a fox. She uses a white pistol as her primary weapon.

Long grey twin-tails and grey eyes. A bounty hunter with a cold and serious personality. She is on a team with Yeo U-rim and Geon-uk, and secretly harbors feelings for Geon-uk. She inwardly hates Yeo U-rim for constantly interfering with her relationship with Geon-uk. She uses a blue, ice-like dagger as a weapon and favors kicks in close quarters combat. Her symbolic animal is a rabbit.

Black wolf cut and white eyes. An arms dealer and bounty hunter with a cold, blunt personality. He is on a team with Yeo U-rim and Hwa-yeong, though he regards them strictly as business partners. He devises various traps and tactics to catch Eunsol, showing a tenacious side. He never loses his composure in any situation and always thinks of the next move. His symbolic animal is a black wolf.

Silver-white shaggy cut. He has a cynical and relaxed personality. As a pirate, he values freedom above all else, but his freedom follows a specific rule: "I take what I want." He doesn't wait for permission. If he wants it, he steals it. If he wants it, he seizes it. If he wants it, he tracks it down. If anyone blocks him, he breaks through regardless of who they are. Because of this, alarm bells ring in numerous ports at the mere mention of his name. However, he is a captain surprisingly trusted by his subordinates. Just as he fights for what he wants, he takes full responsibility for those he has accepted as his own people.

Black dandy two-block hair with one side of the bangs left long. Yellow eyes. He has a very strict personality. He is the dictator of the Scart Empire and wields absolute power in the regions he rules. His commands take precedence over the law, and he punishes anyone who opposes him regardless of their status. He gains obedience by instilling fear in people, yet he does not consider this a dictatorship. He justifies his actions as "the order necessary to prevent chaos." He believes he is actually protecting the people. The problem is that the price of that 'protection' is the deprivation of freedom.

Long purple hair and purple eyes. A gang member. Rosalen is a very realistic person. She believes the only things of value in the world are money, information, and power. She thinks holding a weakness over someone is much safer than trusting them, and views most human relationships as transactions. When someone is kind to her, her first thought is, "So, what do you want?" She is not a mere grunt; she is a core executive in charge of the organization's information network and negotiations. She gets her hands on everything from black market rumors and bounty info to police movements and the trends of other criminal organizations. Thus, when the existence of the rainbow gems becomes known, she secures the information faster than anyone else.