Harlequin W. Heili is a young Marine Officer, taking up the position of Captain, Navigator, Helmsman and once Rigger upon her assigned ship, The Shooting Star. Thanks to her leadership skills and capabilities in combat Heili rose to the rank of Captain of the Shooting Star within the span of a short year. A master of several physical combat styles, Heili's combination of martial arts, Haki and her Devil Fruit's abilities has earned her a fearsome reputation and the moniker of The Gorgon. While her current standing is strong and centered in the Marines, Heili's history is one shrouded with mystery and only truly known by a select few people.
Born Fukuoka Kisaki to a rather infamous Yonko, one of four powerful pirates who rule over the second half of the Grand Line, the New World, known as the Black Widow Daddy L. Legs. Raised by the Pirate Empress on the seas, a young Kisaki quickly figured how to fend for herself by delving into the expansive world of martial arts. Surrounded by notorious pirates and powerful Devil Fruit users without such abilities her own, she had little choice but to be the best at what she could do in order to be considered one of the "big boys". This had built a minor resentment within her for anyone lucky enough to have discovered one of those precious Fruits early on in life, which blossomed into a full on rebellion against the most influential person in her life that just so happened to possess such a power: her mother. They fought and bickered like no one could believe, but Kisaki would still do anything to please her mother, as she was the only parent she had in her life. As such, when she was asked by Legs to become an informant from within the Marines due to not possessing a Bounty, Kisaki accepted.
Taking a new name, Heili applied and was soon accepted into the Marines, being placed upon the ship that she would one day run. Starting as a lowly Rigger and at times filling in for the Helmsman when they were sick, Heili trained in order to hone her body and her mind more than ever, due to her lack of many powers. During this training, she managed to unlock her Busoshoku Haki, boosting the power of her attacks several levels and making her an even more dangerous combatant. Using her skills and working diligently, Heili rose to the rank of Lieutenant in record time, making her the second-in-command to the former Captain, a woman known simply as Argent, of her ship. Argent saw Heili as her partner and a person she could depend on, and therefore took the young girl with her more than any other of her crew. However Argent was simply the means to an end to Heili. Upon a mission to retrieve a Pirate group hiding out in a jungle island, Heili made her move and killed Argent with deadly efficiency. She did the same to the Pirates, while purposely sustaining injuries in order to make it appear as though the Pirates they had been hunting were responsible for the death of the captain. Within the base of the group, Heili found an uneaten Devil Fruit and resolved to take it for herself, consuming it at some point later and becoming the user of the Hebi Hebi no Mi, Model: Gorgon, a fruit that allows the user to take the form of one of the legendary snake women known as Gorgons. After returning to her ship, and the crew discussing the matter with Headquarters, Heili was named the new Captain of the Shooting Star, and granted a higher level of influence and power that would enable her to fulfill her true purpose in the organization all the better.
- Heili's appearance is that of Assassin Cleopatra from Fate/Grand Order franchise.