Vanhemar - The Witcher 3 3D model

If Roche's Path was chosen: Vanhemar stood at Ambassador Fitz-Oesterlen's side while the latter talked with Geralt at the Kaedweni camp.

If Iorveth's Path was chosen: Vanhemar was able to sense Triss Merigold's presence as Geralt unwittingly carried her in figurine form to the Nilfgaardian camp. Subsequently, after taking Triss from Geralt, Shilard Fitz-Oesterlen asked Vanhemar to personally execute the witcher and then congratulate Cynthia for capturing Triss.

However, as Vanhemar prepared to execute Geralt, a Nilfgaardian soldier at his side was shot by Ves; in the confusion, Geralt knocked the mage over and incapacitated him with a kick in the face. The witcher was untied by Vernon Roche and managed to acquire his sword, initiating a fight between himself and Vanhemar in which the Nilfgaardian mage was slain.