Stefan Skellen, known as Tawny Owl, was a Nilfgaardian coroner and member of an Imperial Secret Service. He was tasked with finding, capturing and bringing Ciri to Emperor Emhyr var Emreis. To achieve this, he formed a gang full of various mercenaries and also hired the bounty hunter Leo Bonhart.
He wasn't fully convinced of a totalitarian regime in the empire and so, as a believer in a constitutional monarchy that could later evolve into a democracy, took part in a conspiracy to overthrow Emperor Emhyr var Emreis.
- In The Witcher 3: Wild Hunt, the rope with which Stefan Skellen was hanged is among the various bits of Nilfgaardian paraphernalia collected by Caesar Bilzen and discovered by Geralt during the course of the quest "A Dangerous Game". He also appears on a gwent card.