In the anime Red Baron, the full name of the character commonly referred to as Kumano is Isao Kumano. He is a supporting figure who acts as a reporter covering the Metal Fight competitions. Hailing from the Kansai region, he becomes interested in Ken Kurenai right from the pilot's sudden and impactful debut, and from then on he travels with Ken, Shouko Saeba, and the robot Robby, providing steadfast support.

Kumano is by trade a critic and journalist, which positions him as a keen observer of the tournaments. His personality is generally lively and loyal; he is dedicated to covering Ken's journey and lending help when needed. He occasionally engages in comedic friction with Doctor Freud, one of the antagonists from the Iron Mask organization, but these exchanges do not undermine his reliability as an ally.

As a father, Kumano has a daughter, and her safety becomes a personal stake after Ken intervenes to save her, deepening his gratitude and commitment to the group. This event reinforces his motivation to assist Ken and Shouko beyond mere professional interest.

In the narrative, Kumano's role is one of chronicler and supporter. He is present from the very beginning of the series and remains with the core team throughout their travels. His investigative mindset and access to information allow him to sometimes uncover details that aid the team, and he helps maintain morale. In the latter part of the story, after a critical battle, he and Freud work together to rescue five allies who had been used as energy sources and cast into the sea, demonstrating a capacity to cooperate with former adversaries for the greater good.

Regarding notable abilities, Kumano does not pilot a Metal Fighter. Instead, his strength lies in his extensive knowledge of martial arts. He is able to identify specific fighting techniques and styles simply by seeing them in action or hearing them described, which often provides the team with strategic insights during their encounters.