Is The Witcher real life?

There are bounty hunts for animals, particularly dangerous individual animals. the closest examples to real life witchers I can think of are Jim Corbett and Kenneth Anderson. Both hunted man-eating animals in India for the government.

Are witchers created or born?

Witchers are not born, they’re made. Orphaned kids make up many of the monster hunters, and they’re trained at schools located in different parts of the world.