Karl Holzhauer was created for my first Warhammer Fantasy Role Playing character. He is also my first conversion, combining Warhammer Orc parts, a Khorne Bloodletter axe, and some other bits. Of course, his most distinguishing features, aside from his muscles, is his nose. Karl came from a family of woodsmen in western Ostermark. When the region was overrun by beastmen, Karl became a mercenary before taking up the adventuring life.
I wanted him to look dirty and battle worn. Using several layers if wash, I managed to create the appearance of scars and perhaps a “unique skin condition.”
I recently read the Hangman’s Daughter trilogy by Oliver Pötzsch. When I was reading them, I pictured Jakob Kuisl looking like Karl.