Paz is a supporting character in Ghost in the Shell: Arise Alternative Architecture who becomes one of the founding members of Motoko Kusanagi's independent attack unit, the group that later operates as Public Security Section 9. He comes from a background as an undercover investigator in the army's military police, where he held the rank of lieutenant. His service placed him inside a tradition-bound military institution that offered him little room to make full use of his abilities, and he spent his time there conducting internal investigations and covert infiltration work. In material connected to the same timeline, he is also described as an agent attached to the Foreign Ministry's treaty review division, a cover that reflects the intelligence and undercover nature of his military police background.

In terms of personality, Paz is cool, quiet, and reserved, and he is often seen smoking. He is not a showy or talkative presence within the team, and he tends to work in the background rather than seeking attention. His years of undercover duty made him skilled at reading situations and at deceiving others, and he carries himself with the calm, watchful demeanor of someone accustomed to operating on false identities and in hostile environments. Despite his unassuming manner, he is practical and adaptable, and he is comfortable taking on whatever role a mission requires.

His primary motivation is professional: he wanted to find a place where his particular talents could actually be used, rather than remaining stuck in an outdated organization that did not value them. When he learned that Kusanagi was forming her own unit, he saw an opportunity to do meaningful work within a capable and flexible team and chose to join. This decision reflects a desire for effectiveness and purpose over institutional loyalty, and it places him among the core specialists who commit to Kusanagi's vision of a small, aggressive response unit.

Within the story of Alternative Architecture, Paz serves as one of the unit's dependable support members. He contributes through undercover surveillance and internal investigation, gathering information through direct questioning and observation, and he also carries out network-based intelligence work. His skill set makes him an all-rounder: he can operate in the field, handle reconnaissance, and step into front-line roles when the situation calls for it, even though his main strength lies in quiet, covert work rather than direct confrontation. In close combat, he is especially capable with a knife, a practical extension of his background in infiltration and personal security.

His key relationships are with the other members of Kusanagi's emerging team, including Batou, Borma, Ishikawa, Saito, and Togusa, each of whom brings a different specialty to the group. Paz works alongside them as a steady and reliable presence, complementing the more aggressive temperaments of some of his colleagues with his measured and observant nature. His relationship with Kusanagi is professional and grounded in mutual competence; she recruited him because of his abilities, and he in turn trusts her leadership and the purpose of the unit she is building.

Development-wise, Paz does not receive the same level of individual focus as some of the other members, but his journey is still clear. He moves from a confining military police structure to a merit-based team where his particular talents are recognized and put to use. Over the course of the story, he becomes integrated into a cohesive unit that relies on each member's strengths, and his quiet competence makes him an integral part of that collective. His notable abilities, including knife fighting, undercover investigation, deception, network intelligence gathering, and general field versatility, combine to make him one of the more adaptable figures in the group, even if he rarely stands at the center of attention.