Dr. Kozaburō Nambu, a high-ranking Interpol executive and International Science Organization member, spearheads global security efforts as the architect of the Science Ninja Team—a specialized unit tasked with dismantling the terrorist syndicate Galactor. Born into privilege as the son of a wealthy businessman, he inherited a private airfield and bank before channeling his family’s fortune into the Mantle Project and anti-Galactor research following his parents’ deaths. This pivot, driven by a desire to atone for estranging childhood friend Kentaro Washio from his family, solidified his commitment to planetary protection over personal ties. A polymath educated at Oxford and Cambridge, Nambu holds expertise spanning space engineering, physics, chemistry, astronomy, medicine, and political fundraising. His innovations range from clean energy systems and the oceanic preservation hub Crescent Coral Base to the God Phoenix mecha—a vehicle engineered to mandate teamwork via collaborative activation protocols, resolving early cohesion issues within the Science Ninja Team. He also developed tactical assets like the Bird Missiles. Nambu secretly raised four team members—Ken, Joe, Jun, and Jinpei—obscuring their origins. He shielded Ken from the truth of his father Kentaro’s double life as Red Impulse, a Galactor infiltrator, and staged Joe’s death after Galactor murdered his parents, initially withholding their connection to the organization. Jun and Jinpei received Snack Bar J as a covert base, while Ryu, the sole member with surviving relatives, operated under looser oversight. Beyond mentoring the team, Nambu commanded the Red Impulse Squadron, led by Kentaro, leveraging strategic precision and an impassive demeanor to navigate ISO operations. His stoicism often concealed profound concern for his protégés, expressed through calculated support rather than overt sentiment. Alternate adaptations reimagine his persona: a 1994 OVA grants him a pompadour and flamboyant wardrobe; an unmade Imagi film concept envisions him as Afro-Japanese with a bald head and gray beard; a 2013 live-action iteration recasts him as a recruiter of supernatural "Receptor"-gifted operatives for the Gatchaman unit. Nambu’s ISO directorship began after Director Anderson’s demise in *Gatchaman II* and ended with his own assassination in *Gatchaman Fighter*, passing leadership to engineer Kamo. Certain accounts imply his posthumous influence via an ambiguous reincarnation mechanism. His legacy intertwines with former allies-turned-foes like Dr. Demon, a rival manipulated by Galactor, and Dr. Henjinman, whose cybernetics research Nambu safeguarded. These alliances underscore his duality as a guardian willing to compromise ethics for humanity’s survival.