He was shocked to discover that she was, in fact, a woman.
When Ad Avis sought more power, he went in search of the Dark Master. She soon came to be known as the enigmatic Dark Master - a powerful wizard and vampire. Undeterred, she set about continuing her studies. When her interests turned to darker arts - such as necromancy - her membership was revoked and she was banished.
She was one of the most promising, and ultimately most powerful, members the Institute had ever seen. Little is known about Katrina before her initiation into the Wizard's Institute of Technocery.