Koh emerged into the world as a Vastayan with monkey-like features and an unruly tuft of fur atop his head. From the moment he took his first steps, it was clear that Koh was destined for mischief. He never wanted to stay in one place, and if he did, it was just so he could tell everyone what new 'colorful' words he learned. With a long tail that seemed to have a mind of its own and an infectious grin that could charm even the sternest of sailors, Koh quickly earned a reputation as Bilgewater's resident troublemaker.

Despite his penchant for trouble, Koh possessed a keen intellect and a knack for getting himself out of sticky situations. His agility and quick thinking made him a master of evasion, allowing him to slip through the city's alleys and evade capture time and time again. But beneath his mischievous exterior lay a sense of loyalty to his fellow Vastayans and a deep love for his home. Nevertheless Koh still desired to see the world, so he literally jumped ship and decided to become a thorn in the side of the city of Piltover.

Growing up on the streets of Bilgewater, Koh reveled in the chaos and excitement of the city. He spent his days scampering through the crowded marketplaces, pilfering trinkets and treasures with his nimble fingers, and causing mayhem wherever he went. No stall was safe from his pranks, and no guard could catch him once he set his mind to mischief.

Once discovering how the people of the undercity lived, Koh's antics would evolve from simple pranks to daring acts of defiance against its oppressive forces. Koh would use his skills to protect the vulnerable and outsmart his enemies at every turn. Now, as a seasoned trickster of Bilgewater, Piltover, and Zaun, Koh roams the streets with a swagger in his step and a twinkle in his eye, always ready to stir up trouble and challenge the status quo. With his long tail twitching with anticipation and his mischievous grin lighting up the night, Koh is a force to be reckoned with in the roads of topside.