Korvan originated as a design for a villain in a werewolf-themed story. He is a large, muscular ginger-haired man with a love of hunting, mushrooming, and wilderness. 

Korvan committed a murderous crime out of greed against a Scandinavian witch during his natural life, and now lives an immortal existence as a were-gulon

He retains his human form so long as he remains calm and stable, but the more hungry he becomes – physically or emotionally – the more he transforms into his gulon form, a huge, starving russet-furred fox-cat-wolf monster with an impossible, endless appetite that devours everyone and everything in its path.