Pino belongs to the antagonistic organization Una Casita, alias Small House. At 25, he operates alongside his partner Elmo, a bond formed in childhood when conflict orphaned them both. Recruited and raised by the organization's leader, Mr. D, their shared past cemented unwavering loyalty, with dependence on Mr. D defining their allegiance.

Pino cultivates an enigmatic persona, frequently emphasizing his own mystery. As a skilled assassin for Una Casita, he specializes in neutralizing threats to the organization's goals, employing direct confrontations to secure powerful artifacts called Tesla shards.

During a Chicago mission, he critically wounded intelligence operative Kuruma and nearly killed ninja-trained agent Botan Negoro, demonstrating lethal effectiveness. His role remains strictly focused on executing missions under Mr. D's orders.

Pino and Elmo share mutual reliance, with Elmo acting as the physical enforcer to Pino's tactical precision. Their dynamic stems from shared experiences under Mr. D's influence. Pino's allegiance and methods show no significant evolution throughout the narrative.