Kōichi Ishizaki serves as secretary to Barbara Rose, Anima City's mayor and founder. A pangolin beastman, he possesses a stocky, well-built physique, a square jaw, stern eyes, and wears distinctive red rectangular-frame glasses. He typically dresses in a black suit, white shirt, maroon tie, and a yellow lapel pin.

Operating within Anima City's political sphere, Ishizaki participates in high-level discussions and security matters. He attended a virtual meeting with Prime Minister Shiramizu during the city's 10th-anniversary events, where the Prime Minister issued threats against Anima City; following this tense exchange, Ishizaki joined Mayor Rose in an anniversary toast. He also consulted with Shirou Ogami regarding anti-beastmen terrorists, expressing dismay that beastmen could be manipulated by humans offering financial incentives, highlighting his concern for vulnerable community members.

Analyses categorize his personality as ISTJ (Introverted, Sensing, Thinking, Judging), noting practicality, responsibility, and a strong focus on maintaining order and structure, aligning with his administrative and defense role. Further analyses suggest an Enneagram Type 8w7, indicating assertiveness, confidence, protectiveness, and potential rigidity or inflexibility in adapting to new situations.