Geralt of Rivia. Mercenary. Witcher. Made and trained to kill monsters in the defence of humankind as a sword for hire, he wanders from town to village to smallholdings in the countryside seeking notices nailed to bulletin boards and fence posts. Or maybe the sound of screams from somewhere deep inside the forest nearby, heralding potential work for his kind that they might fill their coin pouch. Drowners, manticores, vampires, kikkimoras, anything the local alderman might pay a bounty for. His downtime is spent playing dice or cards, or brewing potions for his work and tending to his injuries while enjoying the company of a beautiful woman.
Geralt’s adventures were first published in book form by Polish author, Andrzej Sapkowski, as a series of short stories depicting the Witcher’s various jobs ranging from slaying a beast preying on local merchants along the road to lifting curses from a princess at the personal behest of the King. Through all of this, he endures the adulation of those he saved in equal measure to the animosity from those who scorn his kind. Witchers are not quite human, you see. They are usually taken as children to a Witcher fortress that acts as their school, taught to fight with swords, practice herblore for potion brewing, given training in tracking animals, anything that their work would require. Once they come of age, and only if they survive, they are put through the Trial of grasses where their young bodies are subjected to powerful mutagen potions, one after the other, and infected with various sicknesses to develop immunity that will last a lifetime to all sickness. Spells are cast to inject a little magic into them, though just a little.