Morteisen was a Nilfgaardian officer and commander of the Morteisen Battle Group, one of three main divisions of the 7th Daerlanian Brigade. He reported to Elan Trahe.
Spoiler warning: Significant plot details follow.
He met his end in the Battle for the Bridge on the Yaruga river when a dwarf volunteer in the Lyrian army ran him though. He and Cahir had just recognized each other during battle and this shock was likely what caused him to lose focus and be killed.
Significant plot details end here.
Notes[ | ]
In The Witcher 3: Wild Hunt, Morteisen features as an image on a gwent card of the Nilfgaardian deck.