Kaulder is a fictional character from the movie series The Last Witch Hunter. He is portrayed as an immortal witch hunter who has dedicated his life to battling dark forces and protecting humanity from witches. His character is known for his strength, combat skills, and deep knowledge of the supernatural. In the films, Kaulder is often seen wielding various weapons and using magical artifacts to confront his enemies. His backstory reveals that he was cursed with immortality by a powerful witch, which adds complexity to his character as he grapples with the consequences of his long life and the loss of loved ones.