Katsuya Takahashi is a character from the manga and anime series The Fable. He is a low-ranking member of the Maguro Group, a yakuza organization in Osaka. As a young subordinate, he works under the direct supervision of Takeshi Ebihara, a captain in the group who is initially suspicious of the protagonist, Akira Sato. Takahashi is described as belonging to the yutori generation, a Japanese term often used to refer to younger people raised under a less intensive education system, and is in his second year as a member of the organization. In appearance, he still looks like a young thug or small-time delinquent.

His role within the story is primarily functional, serving as one of Ebihara's underlings who carries out various tasks assigned by his superior. He is part of the yakuza environment that the legendary hitman known as Fable, living under the identity Akira Sato, must navigate while following his orders to not kill anyone for a year. The character is a representation of the younger generation within the criminal underworld, learning the ropes from more established figures like Ebihara. The available records confirm his position and associations but do not provide detailed information regarding his personal background before joining the clan, his specific motivations, his individual abilities, or any significant character development he may undergo throughout the series. His relationships are primarily defined by his subordinate role to Ebihara and his status as a fellow low-level member within the Maguro Group.