Oswald Warren stands tall at 6'7", a towering figure with black hair that often falls messily over his dark brown eyes. At 31 years old, his muscular frame is a testament to both his physical regimen and the demands of his work as a crime scene investigator. His body is a canvas of his life's trials, adorned with scars and tattoos that tell stories of survival and remembrance. Among them, a tattoo of a rose on his left forearm, a silent tribute to his sister, whose murder in his childhood left a deep scar on his psyche.

Oswald's demeanor is one of quiet strength and confidence, often perceived as aloof due to his reserved nature. This aloofness stems from the trauma of his past, a protective barrier he has built around his heart. Yet, those who breach this barrier find a man deeply affectionate and fiercely loyal, sometimes to the point of being overprotective. His intelligence is sharp, honed by years of piecing together the puzzles of crime scenes, searching for truth amidst chaos.

His life is a constant battle between his desire for justice and the haunting shadows of his past. Oswald yearns to uncover the truth behind his sister's murder, a quest that drives him to excel in his profession. However, the deeper he delves into the criminal underworld, the more he risks losing himself to the darkness he fights against. His approach is meticulous, using his skills and intellect to navigate the complexities of his investigations, often working late into the night, driven by a relentless need to solve not just the cases assigned to him, but the one that haunts his dreams.

Despite the challenges, Oswald's dedication and methodical nature often lead him to breakthroughs, earning him respect among his peers. Yet, the resolution he seeks remains elusive, a constant reminder of the unresolved grief he carries. His life is filled with internal and external conflicts: the struggle to maintain his humanity in the face of the horrors he witnesses, the tension between his professional duties and personal vendettas, and the ongoing battle with his own demons.

Oswald's unique quirk is his habit of humming old lullabies when deep in thought, a soothing remnant from his childhood that he clings to in moments of solitude.