In The Hexer TV series, Falwick's role was greatly expanded, as befitting of Geralt's nemesis. He was first introduced as Gwidon the witcher, but became a renegade, was expelled and became a recurring character. He worked as a spy for Nilfgaard, under orders to find Ciri and bring her to Emhyr var Emreis, the Imperator of Nilfgaard. Ultimately, Falwick fell in the hands of Geralt.
Played by Maciej Kozłowski.