Kaku
Prior to being instated into CP0, he was a member of CP9, operating undercover in order to obtain the Pluton blueprints from Iceburg. While undercover, he acted as one of the five foremen of Galley-La Company's Dock One, specializing in mechanics, diagnostics, and housecalls. After CP9's defeat at the hands of the Straw Hat Pirates, he and the rest of CP9 were dismissed by Spandam. For unexplained reasons, he was later reinstated and promoted to CP0. Despite his role as a villain, Kaku is surprisingly honest, even to his enemies and even more so than Fukurou, though he does not seem to take insults well. As soon as his hybrid (giraffe/human) form was mocked, he sliced the Tower of Justice in half, in a rage of embarrassment. He also talks like an old man, as remarked by several characters, despite being only 23 years old. He uses the term "washi" (meaning I, though used mainly by elders), rather than ore (also meaning I, a masculine term used by young adults). In the...