Uighur is a prominent antagonist in the anime and manga series "Hokuto no Ken" (Fist of the North Star). He is the formidable warden of Cassandra, an infamous prison known as the 'City of Wailing Demons.' Uighur is renowned for his massive physique, immense strength, and brutal leadership over the prison's inmates. He serves as a major obstacle for the protagonist, Kenshiro, and is a symbol of tyranny and fear within the series, challenging Kenshiro in a memorable battle.