Manabu Tobe, commonly known by the nickname Gaku, is a young elementary school student who serves as a constant presence in the daily lives of the Dagwon team while remaining ignorant of their secret identities for the majority of the series. He is the younger brother of Maria Tobe, a classmate of the main Dagwon members. Gaku is an ardent fan of the Dagwon, whom he regards as genuine heroes, and he maintains his own self-styled "Dagwon Club" dedicated to following their activities and uncovering their true identities. His character is defined by a curious, energetic, and brave disposition, driven by a strong sense of justice inherited from his admiration of the heroes. He frequently inserts himself into dangerous situations in his quest to witness the Dagwon in action, often requiring protection from the team. His motivations are rooted in a pure desire to emulate the courage he sees in the Dagwon and to understand the source of their power. Throughout the series, Gaku develops a particularly close bond with En Daidouji, the de facto leader of the team. En serves as a role model for Gaku, and their interactions highlight the human side of heroism, with Gaku inspiring En to uphold his ideals. Gaku's relationship with his sister Maria is also central, as she often tries to shield him from the dangers he pursues. In terms of development, Gaku matures from a starry-eyed fan into a young person who comprehends the sacrifices and seriousness of protecting others. This growth culminates near the final battle when he finally learns the Dagwons' true identities, a revelation that deepens his respect rather than diminishing it. He accepts the secret and continues to support them as an honorary member of their circle. Gaku possesses no supernatural abilities or combat training; his notable traits are his unwavering bravery, resourcefulness, and a resilience that sometimes surprises the older characters. He often acts as the perspective of the ordinary civilian, reminding both the team and the audience of what the Dagwon are fighting to protect. His presence underscores the theme of innocence and the importance of preserving a world where children can look up to genuine heroes.