Ganzer Lejick is a minor villain from the manga Black Cat and its anime adaptation. He is disturbed and violent serial killer who gained a power of Tao without bothering to train and totally lost his mind. He makes a stark contrast with the Apostles, who master their powers perfectly.
Ganzer was once a talented yet sadistic boxer, who enjoyed since his early childhood to kill small animals, a "game" he called "hunting". One day, he accidentally killed a thug in a bar fight and was arrested by Sven Vollfield, one of the three main protagonists who worked back then as a secret agent. Ganzer was sentenced to 40 years of labour, but he managed to escape jail a few months before the start of the story.