Fried'rich von Purg'stall is a member of the leading council of Cronos in Guyver: The Bioboosted Armour. As one of the twelve Zoalords, he is able to telepathically control any Zoanoids within range of his psychic waves. He was inducted into Cronos by Hamilcar Barcas over 200 years before the events of the series take place. Originally, he was a Bohemian citizen of the Holy Roman Empire from the city of Purg'stall an der Erlauf, an ancient fortified market town. In human form, Purg'stall appears as a middle-aged Caucasian male with gray hair and pointed ears. His Zoalord battle form is hardened and angular, standing at twice the size of Sho Fukamachi with the Guyver equipped.