Benga

is an officer at Hōzuki Castle.

Personality
Benga is a callous individual. He dislikes intellectual pursuits, considering strength to be the only reliable form of maintaining order. Despite being Mujō's subordinate, he looks down on him, thinking him to be soft on the prisoners because of his belief in the possibility of rehabilitation. He has no compassion for the prisoners adopts a no-nonsense attitude with them. At the same time however, he is not above bribes. Regularly, he is wiling to take payment for special favours from the prisoners he is tasked with rehabilitating. He is also a very sloppy man, enjoying regular drinks and leaving his office in such a messy state. At the same time, he is an observant man, noticing sudden changes in the prisoners' activities.

Mujina Bandits Arc
Benga lectured new prisoners on the rules of Hōzuki Castle at their arrival, being rude to Boruto Uzumaki even as he demonstrated interest in knowing what the rules were, and beat him when he expressed concern for Haie, who activated Mujō's branding by trying to escape. Later, he welcomed Sarada when she posed as a journalism student researching the prison. He answered her questions, shared his opinions, and showed her around the different areas of the castle.

Later, after the prisoner Kokuri was attacked by a prisoner, while still in the medical wing, Mujō decided to move Kokuri to a more secure cell. Benga however, as the chief officer in the prison, had final say in the matter as Mujō's position as "lord" of the castle was more figure-head. He declined the idea, insisting that they can't give prisoners special treatment. In truth, Benga was bribed by Tsukiyo to ensure Kokuri was left with little protection as possible to ensure his demise. Later, Mujō discovered Benga's extensive history of accepting bribes in the prison. Using this leverage, Mujō had the authority to take full command of the prison, successfully moving Kokuri to Boruto and Mitsuki's cell.

While Benga fretted over his recent bad luck, he learned to his shock that one of the medical workers lost his key pass, meaning a prisoner could have taken it. Benga had his officers search the prison extensively. Eventually, they discovered Arai had taken it when Boruto was escorted to the medical wing. After Arai was detained, Benga confronted Mujō about his concerns involving the sudden closeness between Kokuri and Boruto. Mujō however instructed him to not delve into this as the prisoners could turn violent on him.