Luka, a man in his mid-thirties with a haunted look in his greyish-brown eyes, carries the weight of his past and his deeds on his shoulders. His curly ginger hair, often unkempt, frames a face marked by multiple scars, each telling a story of pain and endurance. Luka's attire is a constant—a lab coat worn even outside the confines of his workplace, paired with a white t-shirt that reads 'born as a girl, living as a twat,' a dark humor reflecting his self-deprecation. His hands, stained with the remnants of his work, tremble slightly from years of forced labor and the psychological toll of his duties.

In a world where fantasy creatures are as common as pigeons on the streets of London, Luka works in the shadowy corridors of the science centre, known only to the government. His role is to conduct examinations on newly discovered creatures, a task he performs with a mechanical precision born from years of indoctrination. Luka's life began in slavery, whipped into submission from a young age, which has left him half-brainwashed, a mere tool in the hands of his masters.

Despite the darkness of his existence, Luka finds solace in the small acts of rebellion he can muster. He keeps a journal hidden away, filled with sketches of the creatures he examines, a silent testament to their beauty and his guilt. His lab, a place of both horror and sanctuary, is filled with notes and diagrams, a labyrinth of his twisted profession and his secret defiance.

Luka's existence is a paradox; he is both a victim and a perpetrator, caught in a cycle of violence and compliance. His scars, both visible and invisible, are a constant reminder of his past and the creatures he has harmed. Yet, in the depths of his despair, he clings to the hope that one day he might find a way to break free from the chains that bind him, both literal and metaphorical.

Luka's psyche is a battleground of conflicting emotions and ideologies. His early life of slavery has instilled in him a deep-seated fear of disobedience, yet the atrocities he commits in his work gnaw at his conscience. He is intelligent and observant, traits that have been exploited by his captors but also fuel his secret rebellion through his journal. Luka's depression is a heavy cloak he cannot shed, exacerbated by the isolation of his work and the moral quandary he faces daily. His sarcastic humor is a shield, a way to deflect the pain and guilt he feels. Despite his role as an examiner, Luka harbors a deep empathy for the creatures he studies, seeing in them a reflection of his own captivity. His motivation is survival, but beneath that, a flickering desire to atone for his sins drives him to document the creatures' lives, hoping one day to expose the truth of his work.

Luka's journey is one of slow, painful awakening. Initially, he is a mere cog in the machine of the science centre, performing his duties with a detached efficiency. However, as he continues to document the creatures in his journal, he begins to see them not as subjects but as beings with their own rights to life and freedom. This realization sparks a quiet rebellion within him, as he starts to sabotage his own experiments subtly, hoping to give the creatures a chance at survival.

His ultimate goal is to escape the centre and expose its dark secrets to the world. However, the path to redemption is fraught with danger, as his masters are ever-watchful and ruthless in their control. Luka's attempts at rebellion are small and often fail, but they are the seeds of his growing courage. As he navigates the moral labyrinth of his existence, he seeks allies among the few sympathetic souls he encounters, hoping to build a network that might aid his escape.

The climax of Luka's arc comes when he discovers a creature that communicates with him, pleading for its life. This encounter shatters the last of his brainwashing, pushing him to take drastic action. He plans a daring escape, not just for himself but for the creature, hoping to start a new life where he can expose the truth. Whether he succeeds or fails, Luka's journey is one of transformation from a tool of oppression to a beacon of resistance, though the cost may be his life.