Live action TV
Description
Professor Kozuki, more commonly referred to as Dr. Kozuki, is a supporting scientist character in the Casshern franchise, appearing in the original televised anime series Shinzou Ningen Casshern and in related works such as the Casshern: Robot Hunter OVA. He is an older male scientist with grey hair and blue eyes, and he is the father of Luna Kozuki, the young woman who becomes the main human ally of the hero Casshern.

Kozuki is a brilliant researcher and a friend and colleague of Dr. Kotaro Azuma, the scientist whose son Tetsuya transforms himself into the android warrior Casshern. His most notable contribution to the story is the invention of the MF Gun, a magnetic field weapon that is compact enough to be carried and fired by hand yet powerful enough to destroy robotic enemies while causing no harm to humans. In a world where a runaway robot army has taken over and ordinary weapons are largely ineffective, the MF Gun becomes one of the few dependable tools available to the human resistance, and it allows his daughter Luna to fight alongside Casshern despite her lack of superhuman strength.

In terms of personality, Kozuki is portrayed as a dedicated and capable man of science who uses his expertise to serve the survival of humanity. His motivations are rooted in opposing the robotic forces that threaten civilization, both directly through his own research and indirectly by equipping the story's primary fighters with the means to strike back. The details of his personal life are not deeply explored, and his development over the course of the series is limited; he functions mainly as a supporting figure whose work enables the actions of others.

His key relationships are with his daughter Luna, whom he supports in her fight against the robot army, and with Dr. Azuma, with whom he shares a professional friendship. Through his invention, he also shapes the capabilities of Casshern, whose combat efforts are aided by Luna's use of the MF Gun. His notable ability is his scientific genius, most concretely expressed in the development of that weapon, which becomes a signature tool in the ongoing resistance and gives an ordinary human a meaningful way to participate in the battle against the machines.