Paz operates as a Section 9 investigator, primarily providing field support. Rumors of past ties to Japanese yakuza groups precede his time in the unit, earning him a reputation as its "dirty cop." His expertise lies in infiltration, undercover work, and close-quarters combat, with particular skill in folding-knife techniques and street fighting. He often partners with explosives specialist Boma on missions.

A constant chain smoker, Paz is seldom without a cigarette. He maintains a pattern of brief romantic encounters, famously telling Major Motoko Kusanagi he avoids repeating partners. This rule backfired when he slept twice with Kaori Kawashima. Obsessed, Kawashima surgically altered her appearance to match Paz exactly and embarked on a killing spree to eliminate everyone else. Their confrontation ended in a knife fight where one died from a stab wound to the eye. An autopsy discussion between Batou and Motoko deliberately left the survivor's true identity ambiguous.

Within Section 9, Paz serves as a versatile backup agent, proficient in hand-to-hand combat. His cybernetic enhancement grants a "hypersprint" capability for rapid battlefield movement across difficult terrain; when upgraded, this ability can synchronize with allies' systems.

Documented within Major Kusanagi's team during 2029 events leading into *The New Movie*, Paz participated in Section 9's investigations into the Prime Minister's assassination and the Fire-Starter virus conspiracy. His specific actions during these events remain unelaborated. Off-duty, he interacts with colleagues Boma and Batou, though the nature of these relationships is undefined.