Joji Saiga, a former clinical psychology professor and analyst for the Public Safety Bureau’s Criminal Investigation Department, possesses sharp brown eyes framed by corrective lenses and short brown hair swept back, transitioning to gray in later years. His attire shifts from a green sweater and muffler to a lab coat during his CID tenure, reflecting his evolving roles. Renowned for acute observational skills, he deduces intimate personal details through subtle behavioral analysis. A recluse by choice, he cultivates his own food and resides in a non-holographic, Frank Lloyd Wright-inspired home, rejecting Sibyl’s technocentric society. His intellectual rigor merges with a penchant for quoting philosophers like Wilde and Saint-Exupéry, underscoring his disdain for systemic control. After earning a University of Tokyo doctorate in clinical psychology by 2090, he lectured CID inspectors—including Shinya Kogami and Nobuchika Ginoza—until rising Crime Coefficients among students halted his classes. Retiring in 2105, he returned as a temporary analyst in 2114. Saiga mentored Kogami, forging mutual respect that endured after Kogami’s defection, culminating in Saiga risking his Psycho-Pass to shelter him. He later trained Akane Tsunemori, intrigued by her mental stability despite his reputation for unsettling others. Their collaboration deepened during the Kirito Kamui case, prompting Tsunemori to recruit him as a CID analyst. In 2118, Saiga joined a Ministry of Welfare operation against the Peacebreakers, decoding a message from Milicia Stronskaya that led Tsunemori and Kogami to critical documents. During the mission, Peacebreaker operatives threw him from a ledge, fatally injuring him. His death galvanized Tsunemori’s defiance against Sibyl’s authority. Documented details include his Tokyo residence, an emergency contact with an Ota-ku cousin, clinical psychology licenses, and research into Tsunemori’s psychological resilience. His legacy endures through his analytical methodologies, mentorship of CID personnel, and philosophical resistance to societal conformity.