Complex sentence: Master of "Rōgoku Shinken" (Fist of Jail: Fist of the Prison in the english version), he was the one who originally captured Gasser and brought him to Cyber City in the first place.
Split into simpler sentences: Master of "Rōgoku Shinken" (Fist of Jail) (Fist of the Prison in the english version). He was the one who originally captured Gasser and brought him to Cyber City in the first place.