Jouji Saiga, a former analyst and clinical psychology professor linked to the Ministry of Welfare’s Public Safety Bureau, combines forensic expertise with acute behavioral analysis to decode criminal psyches. Renowned for his incisive observational acumen, he identifies intimate details about individuals through microgestures and speech patterns, exemplified by his precise deductions about Akane Tsunemori’s familial background during their initial encounter. His unconventional methodology—empathizing with criminals to reconstruct their mental frameworks—clashes with the Sibyl System’s rigid algorithms, marking him as a controversial figure in its eyes. Saiga chooses a reclusive existence rooted in traditional practices, cultivating his own sustenance, eschewing holographic technology in his home, and preserving physical books as silent protests against Sibyl’s technocratic governance. Though withdrawn, he retains strategic professional alliances, notably mentoring Shinya Kogami during the latter’s tenure as an Inspector. Their dynamic matures into mutual respect, with Saiga offering crucial analytical frameworks during Kogami’s hunt for Shogo Makishima, dissecting how charisma fuels Makishima’s manipulative strategies. Operating at the edge of legal tolerance, Saiga repeatedly jeopardizes his Psycho-Pass to aid investigations. He deliberately supports Kogami’s unsanctioned operations against Makishima, fully aware of the repercussions. Later, in *Psycho-Pass: Providence*, he becomes instrumental in exposing the Peacebreakers’ conspiracy. After intercepting a cryptic warning from Milicia Stronskaya, he directs Tsunemori and Kogami to recover the Stronskaya Papers, classified files revealing Sibyl’s geopolitical manipulations. During this operation, he confronts Kogami about the perils of suppressing violent instincts and implores him to reconcile with Tsunemori. His trajectory ends during a Peacebreakers assault on the task force investigating the Papers. Amid the clash, Saiga is hurled from a ledge, his fatal plunge witnessed by Tsunemori, cementing the human cost of opposing Sibyl. Saiga’s narrative role embodies a philosophical antithesis to the Sibyl System, challenging its failure to grasp human nuance. His enduring legacy lies in his intellectual rigor applied to criminal investigations and his reshaping of key figures’ conceptions of justice beyond algorithmic dictates.