Daishi Akita commands the Superhuman Bureau as section chief, directing operations and devising strategies to counter superhuman threats. His unshakable composure persists even amidst peril, frequently accompanied by a tranquil smile. A member of the Fumer aliens, he can inhabit deceased human bodies or non-human entities like vehicles and machinery, though he rarely utilizes the latter.

Once a human who perished and became a vessel for a Fumer alien, his body now serves as the foundation for the Bureau’s creation and leadership. This extraterrestrial influence cements his role as a pivotal architect of the organization’s objectives. His origins remain concealed from Bureau colleagues, with no records divulging his personal history.

A defining moment arises when he merges with two fellow Fumers, sacrificing himself to stabilize Jiro Hitoyoshi’s volatile powers. This transformation allows him to act as an internal regulator, curbing destructive abilities that once risked uncontrollable outbreaks. The decision underscores his strategic focus on enduring solutions for superhuman coexistence.

His name carries symbolic weight: "Daishi" signifies ambition or aspiration, while "Akita" blends "autumn" and "field." The connection of these meanings to his persona remains unelaborated. Beyond the main series, his activities and evolution in extended media remain unexplored.