The William Fenrook Penitentiary, commonly known as the Fenrook Penitentiary, is a fictional location featured in Bio-Man. It is located on the outskirts of New Metro City, CA. It is named after the Fenbrook Institution in Gravenhurst, Ontario, Canada. It was founded by William Fenrook, who is never seen but is mentioned. It is the current location of both Boris Ivanov and Arthur Winters (Boris was there before he was secretly transferred to Cortech Industries).