Carol

 This article contains spoilers 

Carol is a veteran hunter and prostitute, specializing in the sale of confidential information as well as in tricking prominent male hunters. Her main victims are hunters of great power and potential, since she enjoys keeping the money hard earned by this type of hunter. She shows no interest in men who do not meet these requirements, no matter how much money they offer her.

Appearance
Carol is a beautiful hunter with a spectacular body, which she has modified and improved with the use of nanites to help her with her two jobs. She often wears outfits that highlight these aspects of her body to seduce other hunters.

Personality
Carol presents herself as a skilful and confident hunter, as well as seductive and charismatic when some hunter catches her eye, however deep down she is a cold and calculating person, this in order to obtain the greatest possible benefit.

She will not hesitate to get rid of any hunter who intervenes in her interests or who no longer has anything else to offer her, in that sense Shikarabe mentioned that at least 12 hunters were prey to her charms only to end up being disposed of and killed after she take away everything they had and they try to seek revenge.

Enticement
Carol uses her physical appearance to seduce hunters who attract her attention, as well as to handle negotiations.

Manipulation master
Carol is an expert in manipulating male hunters, this with the intention of extracting all valuable information they have, as well as to take away every last penny they bring

Weapons expert
Like any hunter, Carol is an expert in handling weapons to such a level that she is usually hired to work as a bodyguard.

Enhanced body
Using nanites, Carol remodeled her body to help herself in her two jobs, in this way Carol is a prominent hunter, as well as a highly sought after prostitute.

Akira
After being saved by Akira, Carol develops a strong interest in him (which is only increased by seeing Akira's power), trying to seduce him whenever she can only to end up being rejected by him. Although Akira is attracted to older women (like Sara and Elena), he has no feelings for Carol and made it clear that he would kill her if she becomes an obstacle to him. The fact that Akira always rejected her has caused Carol to question her charms, as well as her interest in Akira only increasing.

Since she met Akira, Carol always has an eye on him, so she also tends to ignore the work she is doing in order to attend his requests (According to Viola this is because she really likes Akira).

Shikarabe
They have a quite tense relationship, since she has obtained a lot of confidential information thanks to him, which has caused a lot of problems for him. Shikarabe greatly dislikes Carol and prefers to stay away from her but is weak to her charms which only makes him angrier.

For her part, Carol only sees Shikarabe as a useful fool who gives her valuable information in a simple way.

Sara and Elena
Despite all the investment Carol made in her body, Elena and Sara are on her level in terms of beauty and power (something she realized herself to her disgust). Despite having almost no interaction, Sara and Elena view Carol with suspicion, which would later be affirmed when buying information from Shirakabe regarding her. For her part, Carol also decided to investigate these two, in order to find out what kind of relationship they have with Akira.

Katsuya
Following her taste for powerful hunters, Carol collected information about Katsuya, drawing her attention that his team is only made up of women, who behave strangely in her opinion (according to her, Katsuya's group looks more like a sect), for which she decided not to get involved with him.

Sheryl
Despite having Akira's girlfriend title, Carol quickly noticed that Akira and Sheryl's relationship is purely business. Therefore she has no consideration in trying to seduce Akira in front of Sheryl much to the chagrin of the latter. However, she is aware of the importance of Sheryl for Akira, so she usually helps her.

Carol likes to tease Sheryl by saying how much she resembles Viola (in terms of cunning and intelligence), which often puts Sheryl in a bad mood.

Trivia

 * When she works as a prostitute, it is Carol who chooses her clients.
 * Despite being very rich, Carol continues to work as a prostitute, this for the mere fact of seeing how the most powerful hunters succumb to her charms.
 * Akira is the first hunter who has made Carol doubt her charms.
 * According to Viola, Akira is the first hunter who has managed to capture all of Carol's interest and attention.