TV-Series
Description
Kaku is first introduced as one of the five foremen of the Galley-La Company's Dock One in Water 7, where he poses as a skilled and friendly shipwright. He is a young man of 23 years with a remarkably long, square-shaped nose, which often leads to him being mistaken for the Straw Hat pirate Usopp. His eyes are large and round, and he is consistently seen wearing a cap, first a white one during his cover and later a black or white one as a government agent. His jumping ability during his time as a shipwright earned him the nickname Mountain Wind. During the five years he spent undercover, Kaku became a respected and masterful shipwright, a profession for which he displayed genuine talent and knowledge. This was most poignantly demonstrated when he inspected the Straw Hats' ship, the Going Merry, and delivered the honest, devastating verdict that it was beyond repair due to a broken keel, a fact he explained with professional detachment.
While working at Galley-La, Kaku's personality appears warm, affable, and easygoing, often seen laughing and smiling alongside his colleagues. However, this is a cover for his true identity as a ruthless agent of Cipher Pol No. 9, the government's secret assassination squad. Once his cover is blown, his demeanor shifts dramatically to one that is cold, dispassionate, and professional. Despite this chilling efficiency, remnants of his more genuine personality frequently surface. He is surprisingly honest, even towards his enemies, and displays a distinct enjoyment for combat, often taunting his opponents and exclaiming that a life-or-death battle is fun. He does not tolerate insults well, as shown when his giraffe-human hybrid form is mocked, prompting him to slice the Tower of Justice in half in a fit of embarrassed rage. After his defeat by Roronoa Zoro, he shows great sportsmanship, laughing off a joke about working in a zoo and handing over the key to Robin's handcuffs without being asked. He also expresses a hint of regret that the five years he spent as a shipwright, living a normal life, could not continue, suggesting that his villainous actions are more a product of his assassin occupation than his true nature. His motivations are primarily rooted in duty and the mission, and he follows orders with unwavering obedience, yet he also values a fair fight and the thrill of testing his strength against capable opponents.
Within the narrative, Kaku serves as a major antagonist during the Water 7 and Enies Lobby arcs. As a member of CP9, his primary mission was to retrieve the blueprints for the ancient weapon Pluton from the mayor of Water 7, Iceburg. He was directly responsible for sending the Going Merry out to sea during the deadly Aqua Laguna, leading to its apparent demise. At Enies Lobby, he becomes a primary combatant for the organization, engaging in an extended and creative battle against Roronoa Zoro. His key relationships include his professional but rivalrous dynamic with fellow CP9 agent Jabra, with whom he frequently argues over power levels and kill targets. He operates under the command of Rob Lucci, the group's strongest and most calculating member, and takes orders from their superior, Spandam. After the timeskip, Kaku is reinstated and promoted to CP0, the most elite branch of Cipher Pol, demonstrating the government's continued trust in his abilities. In later arcs, such as Egghead, his role evolves into that of a reluctant and temporary ally to the Straw Hats, cooperating with Zoro to fight against a greater threat, though his core loyalty to the World Government remains intact.
Kaku is an exceptionally formidable fighter, holding a Doriki power level of 2200, which makes him the second strongest member of his CP9 generation behind only Rob Lucci. He is a master of the six superhuman martial arts techniques known as the Six Powers. He is particularly proficient in Rankyaku, a technique where the user kicks with such speed and force that they generate a sharp, flying slash capable of cutting steel and stone. He has developed an immense number of variations of this technique, from large-scale area attacks like Rankyaku: Chaos to a focused, spinning version called Rankyaku: Sen, which he used to cleave the Tower of Justice in half. He is also the most skilled swordsman in CP9, fighting with two swords in his hands. When combined with the Rankyaku slashes from his legs, he declares this his Four-Sword Style. During the Enies Lobby arc, he consumes the Ushi Ushi no Mi, Model: Giraffe, a Zoan-type Devil Fruit. This fruit allows him to transform into a full giraffe or a bipedal giraffe-human hybrid. While the form appears awkward, Kaku proves to be incredibly inventive, creating a host of unique techniques that utilize his new anatomy. These include using his long neck as a whip, compacting his square body into a cube-like form with no blind spots for defense, and using his long nose as a powerful battering ram for a variation of the Shigan or Finger Pistol technique. Later in the series, he has demonstrated the ability to use both Armament and Observation Haki, further solidifying his status as a high-level combatant.
While working at Galley-La, Kaku's personality appears warm, affable, and easygoing, often seen laughing and smiling alongside his colleagues. However, this is a cover for his true identity as a ruthless agent of Cipher Pol No. 9, the government's secret assassination squad. Once his cover is blown, his demeanor shifts dramatically to one that is cold, dispassionate, and professional. Despite this chilling efficiency, remnants of his more genuine personality frequently surface. He is surprisingly honest, even towards his enemies, and displays a distinct enjoyment for combat, often taunting his opponents and exclaiming that a life-or-death battle is fun. He does not tolerate insults well, as shown when his giraffe-human hybrid form is mocked, prompting him to slice the Tower of Justice in half in a fit of embarrassed rage. After his defeat by Roronoa Zoro, he shows great sportsmanship, laughing off a joke about working in a zoo and handing over the key to Robin's handcuffs without being asked. He also expresses a hint of regret that the five years he spent as a shipwright, living a normal life, could not continue, suggesting that his villainous actions are more a product of his assassin occupation than his true nature. His motivations are primarily rooted in duty and the mission, and he follows orders with unwavering obedience, yet he also values a fair fight and the thrill of testing his strength against capable opponents.
Within the narrative, Kaku serves as a major antagonist during the Water 7 and Enies Lobby arcs. As a member of CP9, his primary mission was to retrieve the blueprints for the ancient weapon Pluton from the mayor of Water 7, Iceburg. He was directly responsible for sending the Going Merry out to sea during the deadly Aqua Laguna, leading to its apparent demise. At Enies Lobby, he becomes a primary combatant for the organization, engaging in an extended and creative battle against Roronoa Zoro. His key relationships include his professional but rivalrous dynamic with fellow CP9 agent Jabra, with whom he frequently argues over power levels and kill targets. He operates under the command of Rob Lucci, the group's strongest and most calculating member, and takes orders from their superior, Spandam. After the timeskip, Kaku is reinstated and promoted to CP0, the most elite branch of Cipher Pol, demonstrating the government's continued trust in his abilities. In later arcs, such as Egghead, his role evolves into that of a reluctant and temporary ally to the Straw Hats, cooperating with Zoro to fight against a greater threat, though his core loyalty to the World Government remains intact.
Kaku is an exceptionally formidable fighter, holding a Doriki power level of 2200, which makes him the second strongest member of his CP9 generation behind only Rob Lucci. He is a master of the six superhuman martial arts techniques known as the Six Powers. He is particularly proficient in Rankyaku, a technique where the user kicks with such speed and force that they generate a sharp, flying slash capable of cutting steel and stone. He has developed an immense number of variations of this technique, from large-scale area attacks like Rankyaku: Chaos to a focused, spinning version called Rankyaku: Sen, which he used to cleave the Tower of Justice in half. He is also the most skilled swordsman in CP9, fighting with two swords in his hands. When combined with the Rankyaku slashes from his legs, he declares this his Four-Sword Style. During the Enies Lobby arc, he consumes the Ushi Ushi no Mi, Model: Giraffe, a Zoan-type Devil Fruit. This fruit allows him to transform into a full giraffe or a bipedal giraffe-human hybrid. While the form appears awkward, Kaku proves to be incredibly inventive, creating a host of unique techniques that utilize his new anatomy. These include using his long neck as a whip, compacting his square body into a cube-like form with no blind spots for defense, and using his long nose as a powerful battering ram for a variation of the Shigan or Finger Pistol technique. Later in the series, he has demonstrated the ability to use both Armament and Observation Haki, further solidifying his status as a high-level combatant.