Tamaki Katagiri is a physically imposing man with blond hair that is parted down the middle, complemented by his striking yellow eyes. He is often seen wearing a pair of yellowish-brown sunglasses, which help him perceive the spider thread released by his sister, a key part of his fighting style. Tamaki is equipped with a pair of Varanium knuckle chainsaws and Varanium-made boots, which enhance his combat abilities. His physique is notably resilient, allowing him to endure significant hits from opponents, showcasing his impressive durability and battle skills. This combination of strength, durability, and specialized equipment makes him a formidable force in combat.

Tamaki Katagiri is a hot-headed and brash individual with a strong sense of arrogance. He made it clear to Rentaro that he would not work for someone weaker than him, which highlights his confident and prideful nature. Despite his defeat, he accepted his loss and decided to join the team, showing a degree of maturity in acknowledging his shortcomings.

However, his attitude shifts when it comes to Kisara. He becomes quite smitten with her, referring to her with terms of admiration such as “My Goddess” or “Onesan.” Tamaki is clearly impressed by her abilities, especially when he witnesses her easily strike down a Gastrea creature with a single swipe of her sword, further deepening his admiration for her.

Tamaki leads his own Civil Security agency, managing its operations and missions while ensuring the welfare of his employees and clients. His corporation is one of the key players in combating the Gastrea.

Tamaki works closely with his younger sister Yuzuki, a skilled and powerful Initiator. Their partnership exemplifies mutual trust and teamwork, as Tamaki provides guidance while Yuzuki contributes her combat abilities.

Tamaki occasionally interacts with Rentaro and his team, either as an ally or as a rival, depending on the circumstances. These interactions highlight Tamaki’s competitive nature and his willingness to collaborate when necessary.

• Yuzuki Katagiri
  Tamaki shares a close and protective bond with his younger sister, Yuzuki. As her Promoter, he values her safety above all else and works tirelessly to ensure she is treated with respect despite being a Cursed Child.

• Civil Security Network
  As a fellow Civil Security officer, Tamaki has a professional relationship with other Promoters, including Rentaro Satomi, often offering advice or competing to prove his agency’s worth.

Tamaki Katagiri’s role as a Promoter and leader of the Katagiri Civil Security Corporation adds depth to the world of Black Bullet. His partnership with Yuzuki underscores the importance of trust and familial bonds, while his leadership and tactical prowess highlight his dedication to humanity’s survival. Tamaki’s character exemplifies the challenges and responsibilities faced by those on the frontlines of the Gastrea war, leaving a lasting impression on fans of the series.