Amdarais

 was formerly a Rune Knight name Geralt. He managed to defend the Heart of Ymir located at Glastheim Castle from Himmelmez, but was eventually defeated by the valkyrie. To punish him for wasting her time, Himmelmez tortured him using her magic and then mutated him into. Even as, Geralt still had his mind intact and tried to stop himself from attacking his commander Heinrich and the people he was with.