Koko Hekmatyar | Trading secrets

Koko Hekmatyar is the protagonist of the series. She is the daughter of shipping magnate Floyd Hekmatyar and the younger sister of Kasper Hekmatyar. Koko is an arms dealer and a member of HCLI's Europe/African Weapons Transport Division. She leads a squad of bodyguards with whom she travels the world conducting business. "Jormungand", a secret project between her and her best friend Minami Amada, provides the context behind her actions.

A slim, fair skinned young woman with waist-length fair hair styled in a hime cut and light coloured eyes, Koko has white hair with light blue eyes and pale skin in the anime. When she was younger she maintained her hair at chin length and two years later has again cut it to that length. She is very similar in appearance to Kasper Hekmatyar (Koko's older brother), although they are not twins. Koko is usually well dressed, as she favors business suits or similar attire, with or without neckties. She also wears a white coat with a feather-like collar. Because she has a tendency to burn when out in the sun, Koko usually wears a broad-brimmed straw hat when outdoors for an extended period of time.

Koko remains a largely enigmatic character, rarely revealing her true state of mind. She normally appears quite cheery and happy and sometimes acts immature when around her subordinates, having a tendency to throw fits when frustrated or angered. However, she is able to rebound quickly and rarely allows herself to remain stuck. Even when in dangerous situations, she is able to keep a clear head and actually smiles when she is in danger. Previously, she was unable to keep her composure when in danger, but made a promise to Echo to do so after he was mortally wounded while protecting her from Hex and her unit. She has since largely masked her true feelings. Koko can be crazed, ruthless and determined, making her a very dangerous opponent as she will not hesitate to use various means, including deadly force, to reach her ends. However, a single action or statement by her opponent can motivate her to display mercy towards them depending on the circumstances, and she has occasionally been willing to spare them. Koko is unafraid of weapons because she is in the business of selling them and believes that one should not fear one's merchandise. She has a fatalistic attitude towards her own death, feeling that unless it is her time to go, then she will escaped the situation unscathed. Koko is also very charismatic, a trait that she exhibited early when she impressed four older veteran soldiers (Lehm, Wiley, Echo and Valmet) to leave the military and join her.

For her business dealings, Koko only accepts payment in the form of cash, although she once made an exception by accepting diamonds. She refuses to take any credit and has met attempts to pay her with drugs by having her squad immediately kill the payees. Because of the circumstances of Echo's death, Koko has trouble sleeping during the full moon as it reminds her of the incident. Early on it was suggested that she tends to sleepwalk, but this was only shown once, at the start of the series.

Having been trained in HCLI's business from a young age, Koko became involved in arms dealing early, starting when she was a teenager. Despite her youth, she was allowed to operate on her own accompanied by her bodyguards. Although she did not receive a higher education, her business sense and negotiating is top notch and she is a very successful arms dealer despite later growing to despise the business.

Koko has excellent instincts and has come to rely on them to see her and her squad through difficult situations. She is also able to quickly size up other people and tends to be spot on with her evaluations, sometimes even when she has not previously had the chance to research the other person's background. She is generally calm when in danger due to the nature of her work, but can get unnerved when she is by herself and without her bodyguards nearby. She has an encyclopedic knowledge of weapons backed up by real world experience and is a hyperpolyglot, speaking several European languages as well as Arabic and Japanese.

Unlike her subordinates, Koko typically does not fight, although she has wielded a pistol on three occasions, twice in combat. She is actually a decent shot, being able to put two out of three quick shots from a Sig Sauer SP-2022 into a bullseye with the third just missing. She is also well oriented with her laptop, from conducting business transactions to navigating a Sperwer B in combat. Koko generally directs her squad's actions but also gives them a great deal of initiative. She possesses excellent tactical and strategic sense and can quickly analyse a situation and how to handle it as well as think multiple steps ahead.