Dustin’s body glowed gold as well.
The martial art Robert used was the Guide to Slaying a Dragon, and it was one of the ultimate techniques of the Fox family.
When the Fox family was slaughtered, everything they owned had been divided between the murderers. Lord Barbenheim was among the people who played a crucial role in it, so he received some of the martial arts passed down through generations of the Fox family.
Robert had studied these martial arts techniques since he was a little boy.