Koby the Hero is a Marine Captain who trained together with Helmeppo under Vice Admiral Garp’s supervision. He is currently a member of the Marine special forces unit SWORD.
Due to his status as a hero, the Cross Guild has assigned Koby a 5-star bounty, worth 500,000,000 Berries.
Due to his harsh training regimen under Garp, Koby has developed a high physical prowess, such as strength and speed. As with his mentor and Kuzan, he would often use retired battleships as punching bags, often doing so every night after finishing training with Garp, all while not using Haki to build up punching power; where at some point, like those renown Marines, he’d become capable of caving in the armored hulls.
At Hachinosu, an almost exhausted Koby hardened his fist to break apart Avalo Pizarro’s gigantic hand, preparing to crush their escaping battleship, which carried civilians and comrades. Furthermore, he proved skilled and powerful in the advanced application of emitting Haki without a medium, resulting in him blasting apart the Ten Titanic Captains’ gigantic island hand. Such a feat of Haki sparked immediate astonishment from the Marines, SWORD members, and Blackbeard Pirates, some of which included Devil Fruit users and combatants who fought powerful opponents. With black lightning visibly coming from Koby’s punch, it’s unclear whether the young Marine used just a particularly strong Advanced Armament Haki or the all-powerful Advanced Conqueror’s Haki.
By now Koby is an exceptionally strong Marine, whom even Garp recognized as the future of the Navy. However, only about three years ago he was a total weakling, with physical prowess and mental fortitude far below even those of the average person.
