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 of the Star, 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.
While hiding, Ganzer was visited by Creed Diskenth, along with Charden Flamberg and Kyoko Kirisaki. They gave him a vial of Shinkito, a potion able to reveal someone's special power of Tao, and offered him a place among them should he reveal a power.Ganzer drank the potion and gained the power of "Muscle". He became able to increase the size of muscles and magnify his already impressive physical strength to enormous levels. When using all his power, he turns into a hulking mass of muscles with extreme destructive power. He is also able to make his muscles so hard that he can use them as a shield. With this power of Tao, Ganzer also gained the ability to locate people by sensing their ki.
Gaining such a power had dire consequences on his troubled mind however; he persuaded himself to have become invincible, delusionally fancying himself as one of the very best warriors alive. In reality, he is without a doubt the weakest and least trained Tao-wielder of the entire series. Indeed Ganzer wields the most limited of all powers of Tao, which offers the least possibilities and prevents him from developing special techniques, reflecting his brutal and straightforward fighting style. Even worse, he never bothered to train his power nor to learn how to use his ki, which would ultimately lead to his downfall.
Ganzer came to a town named Rubeck City and started slaughtering the population, making more than 30 victims and frightening the civilians so much that they hid in their homes all day, turning the city into a ghost-town. The mayor, Carl Walken, sent the police after him but this only augmented Ganzer's list of victims. Being a superior of the secret organization Chronos, Carl could get in touch with his former protégé Train Heartnet, the main protagonist and most powerful warrior alive, known as the Black Cat. Carl asked Train's help as a bounty hunter, promising him a reward of 15 million yens to get rid of Ganzer.
Meanwhile, Charden and Kyoko go to Rubeck City to recruit Ganzer, but the maniacal murderer has no intention of keeping his part of the bargain, as he is having too much fun by now. He sense their presence and violently punches the ground (without even making them flinch) before recognizing them. He tells them to forget about him and go away, or else he could attack them as well. As he is taunting Kyoko, stating that he would love to hear her cry (not knowing that she could literally reduce him to ashes with little effort), Charden tells him that they will come back. Charden later states that Ganzer's obsession for "hunting" took over his deranged mind, meaning that he would be nothing but a hindrance to them.
Train, Sven and Eve later go to Rubeck City and start investigating. Eve offers to serve as a bait to lure Ganzer out, closely watched by Train and Sven, but they did not suspect that Ganzer was hiding in the sewers. The psychotic killer captures Eve, who is too afraid to do anything against him and gets hit. Train fires on his arm from above, but not to avail and he gets punched into a wall. Sven then rushes into the fight but Ganzer destroys his gun. He then recognizes Sven and expresses his desire of revenge.
Sven realizes that Ganzer's power is based on the Tao but Ganzer refuses to answer his questions and attacks him. Train manages to slightly wound him with an explosive bullet and he escapes in the sewers. Incensed, Ganzer gathers all his might and attempts to strike his enemies from below, as he can sense their ki and knows exactly where they are. Sven then decides to use his own power, the "Vision Eye", which enables him to foresee the future and allows his team to dodge Ganzer's deadly punches. Upon Sven's advice, Train ends up using a "Freeze Bullet": a bullet filled with liquid nitrogen that freezes his entire body, rendering him unable to move.
Charden and Kyoko, who witnessed the fight, then appear and mock Ganzer for not listening to what they told him. Ganzer ultimately dies from ki overuse, as he spent it carelessly without training during entire weeks, serving as an example of what happens to Tao-wielders who do not train properly.
In the anime, Ganzer is quite similar to his manga counterpart, though much more villainous as he almost only targets women, whom he rapes before killing them. He also remembers Sven very well and is looking for him to kill him. Ganzer was broken out of jail along many other criminals by Charden and Kyoko, who revealed his power of Tao. Ganzer then escaped to Rubeck City with three cellmates who call him "big brother". The hunt for Ganzer, his refusal to join the Apostles and his ultimate demise are the same as in the manga, except than Sven has to dress up as a woman to lure him out. Also, one of Ganzer's followers drinks Shinkito, believing that he will become "invincible" as well but he dies because he lacks any power to begin with, prompting the other two to flee.
Ganzer also appears in the short story Stray Cat, which served as a prototype for the series. He appears taller, wearing a trench coat and sunglasses. In this story, Train used to work as a bounty hunter for a secret society of Tao Masters and is now a delivery man alongside Sven; (contrary to the manga where he worked as an assassin and became a bounty hunter).
Train and Sven are tasked to bring back home the runaway daughter of a very rich man who offers them a 5 million yens reward. Said daughter, Sherryl Kenius, is a clumsy and inexperienced bounty hunter wannabe, whom Train saved earlier from two thugs. Sherryl runs into Ganzer Lejick, who is once again a psychotic and perverse murderer who killed more than 200 persons with his sword. However, he is far more calm, collected and knowledgeable than his actual manga counterpart. When Sherryl tries to arrest him to gain his 12 million yens bounty, he calmly remarks that a gun is useless when the security device is locked, (Sherryl forgot to unlock it) before destroying said gun with a swipe of his sword. Sherryl only owes her life to Train's intervention, and the young delivery man challenges the serial killer into a fight.Train pulls out his Ki Gun, a special revolver based on a technique of Tao which absorbs its wielder's ki to shoot devastating bullets of pure energy. Ganzer recognizes the gun as the signature weapon of the legendary Bounty hunter Black Cat, and ironically from someone who dies in the real manga from misusing his ki, he warns Train that someone inexperienced will die at once using this weapon.
If Ganzer knows the gun and its particularities, he mistook Train for a rookie and gets easily defeated. He manages to dodge Train's first energy blast but Train channels his ki to form a blade, which he use to break Ganzer's sword and Ganzer passes out from the sheer pressure emitted by Train.