Jean is an agent with the Social Welfare Agency, the older brother of fellow agent Jose and the handler of Rico. Cold and aloof, Jean is one of the SWA's most merciless members as he normally has no regard for the lives he takes, as long as he can kill any terrorist that gets in his way. Unlike Jose and Hilshire who show compassion for their cyborg partners, Jean regards Rico as a tool of the trade, giving her the most conditioning of any cyborg within the SWA and known to be physically abusive with her on occasions. His purpose with involvement in the SWA is to seek revenge on the terrorist organization known as the Five Republics Faction who were responsible for the murder of his younger sister, Enrica, and fiance, Sophia Durante, from a planted car bomb. Before joining the SWA, Jean was a former member of the Carabinieri, Italy's national police force.