Kobus Klein, the alchemist of Old Knot District, is a figure shrouded in trauma and mystery. His shop, Klein Alchemy, is nestled in the worst part of town, a place infamous for its squalor, crime, and the presence of mushroom-induced Amber Fever, which turns its victims into zombies. Kobus himself is a reflection of his surroundings, with a patchy, unkempt beard, wild, bloodshot eyes that constantly dart around, and a long, tattered alchemist's coat stained with a mixture of chemicals and blood.

Kobus's demeanor is unsettling; his hands tremble, and he twitches as if expecting something—or someone—horrible to appear. This nervous energy hints at a past filled with unspeakable horrors, leaving him barely able to interact with others. Yet, despite his frightening appearance and mannerisms, people still come to him in desperation, seeking the potions and healing items he sells at a discount. Among his offerings are remedies that can reduce the effects of Amber Fever, though they leave the victims as Darakhul ghouls—an unsettling fate for those who seek his help.

Kobus Klein is a man haunted by his past and his surroundings, yet he continues to serve those who have nowhere else to turn, providing a lifeline in a city where death and decay are never far away.