What Turned Johan Liebert Into A Monster?
- Pavas Gagneja
- Mar 1
- 3 min read

Johan Liebert from Monster is one of the most chilling characters in anime history. His calculated cruelty and cold personality left a lasting impression on fans. But what exactly turned Johan into the monster that he became? To understand Johan’s transformation, we must understand his traumatic childhood, the manipulation he endured, and the psychological difficulties that shaped him.
From the very beginning, Johan was portrayed as a genius, but behind that intelligence was a deeply troubled person. His experiences as a child, the psychological experiments he was subjected to, and the philosophical beliefs he developed over time all played a role in turning him into a monster.
Johan's Traumatic Childhood

Johan’s journey into becoming a monster began during his childhood. He was born a twin, and his early life was marked by trauma. Johan and his twin sister, Anna, were sent to an orphanage that secretly conducted psychological experiments on children. These experiments were meant to break down the children’s personalities and reshape them into something completely different.
During their time in the orphanage, Johan witnessed unimaginable horrors. One of the key moments in his transformation was when he was forced to switch places with Anna. The trauma and psychological manipulation he endured at such a young age scarred him deeply.
It was here that Johan’s view of the world began to warp, leading him down a dark path.
The trauma from this period in his life left Johan with a sense of emptiness. He began to see the world as meaningless, where life and death had no real value.
The Manipulation Of Franz Bonaparta

Another major influence in Johan’s transformation was Franz Bonaparta, the man behind the orphanage’s psychological experiments. Bonaparta was obsessed with breaking the human psyche and pushing people to their limits. Johan became one of his key subjects, and the experiments conducted on him were designed to erase his sense of self and reshape him into a tool for manipulation.
Bonaparta’s influence on Johan cannot be understated. Johan learned from him that humans could be controlled, manipulated, and bent to one’s will. This understanding of human nature is what led Johan to become a master manipulator himself. He began to see people as mere pawns, tools he could use for his own amusement or goals.
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Through Bonaparta’s teachings, Johan developed a fascination with death and destruction. He believed that by erasing himself from the world, along with everyone who remembered him, he could create the ultimate form of freedom. This dangerous ideology became central to Johan’s actions throughout the series.
Johan Liebert's Philosophical Beliefs In Monster

As he grew older, Johan developed a nihilistic worldview. He believed that life was inherently meaningless and that people were essentially worthless. This belief drove him to commit horrible acts, as he saw no value in human life.
Johan’s goal was to create a world where he could completely disappear; erasing his existence, along with everyone who knew him. Johan Liebert's actions throughout Monster were aimed at achieving this goal. He manipulated, killed, and caused chaos without remorse, all for his twisted idea of freedom through non-existence. At the core of Johan’s philosophy was the belief that people were fundamentally flawed.
Johan’s Relationship With His Sister

Johan’s twin sister, Anna (who later took the name Nina), played an important role in his life and transformation. Despite his twisted nature, Johan seemed to care for his sibling deeply, though in a distorted way. Johan saw himself and Anna as one being, and he often projected his own feelings of emptiness onto her.
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At various points in the story, Johan tried to protect Anna, but his way of protecting her was often harmful. He erased her memories of their traumatic childhood, believing that by doing so, he could shield her from the sadness he felt inside. However, this also contributed to his own descent into madness, as he took on the full weight of their trauma alone.
Final Verdict: Johan Liebert Is The True Monster

In the end, Johan Liebert’s transformation into a monster was the result of a perfect storm of trauma, manipulation, and philosophical corruption. His childhood experiences in the orphanage, the psychological manipulation of Franz Bonaparta, and his own nihilistic beliefs all played a part in shaping him into the terrifying figure he became.
Johan’s character in Monster is an example of the fragility of the human mind and the effects that trauma and manipulation can have on an individual. He was a monster not because he was born that way, but because the world around him twisted him into one.
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