TV-Series
Description
Professor Brighthead is the English-language name, used in the G-Force: Guardians of Space adaptation of Gatchaman, for the character who appears in the original Japanese series as Dr. Kōzaburō Nambu. Some materials also identify him as Dr. Benjamin Brighthead. In the story, he is the chief scientist and administrator of the International Science Organization, known as the ISO, and the creator, mentor, and commanding officer of the five-member Science Ninja Team that opposes the activities of the terrorist organization Galactor.

His background is that of a distinguished scientific figure. His field of expertise is astrophysics, and he is described as a respected alumnus of prestigious universities, including Harvard and Cambridge. Within the ISO, he serves as the director in charge of the agency's Mantle Project. According to one account, aliens opposed to Galactor's leadership supplied him with a wealth of advanced science and technology, which he used to create the Science Ninja Team, their weapons, and their vehicles, most notably the supersonic aircraft known as the God Phoenix. He also adopted and trained the five young people who became the team.

In personality, Brighthead is a stern and disciplined leader. He is a demanding commander who is accustomed to having his orders followed, and he can be ruthless when circumstances require it. Despite his scholarly appearance, he is physically and mentally much tougher than he looks. His central motivation is the defeat of Galactor and the protection of the world from the organization's schemes; he formed and equipped the Science Ninja Team with the hope that their training would be enough to end the Galactor threat once and for all.

His role in the story is that of the team's dispatcher, strategist, and technological provider. He monitors Galactor's movements, activates the team when attacks occur, supplies intelligence and equipment, and coordinates the long-running campaign against the enemy. As a mentor, he is a parental figure to the young heroes, especially to Ken, the team's leader, for whom he serves as a second father. He is also a close friend of Ken's father, the pilot and commander known as Red Impulse. Across the original series and its sequels, he remains the team's constant commander and support figure as the conflict evolves and new challenges arise.

His notable abilities lie in his intellect rather than in personal combat. He is a brilliant inventor and scientist responsible for much of the team's technology, including the Science Ninja Technique, a unique martial art practiced by the team, as well as the transformation devices, weapons, and vehicles that allow the members to carry out their missions. His defining strength is the combination of scientific knowledge and strategic leadership that keeps the team operational against a technologically advanced and relentless enemy.