The Blue Dragon of Heaven
Guk Taeyang was a master of the Northern Broad Strike. It has been stated that in the past Lightning Tiger asked him to teach him some of the Northern Board Strike. Sometime later he takes Hayato as his apprentice after him following and begging him for a while. He talks to other tradionalist masters about fighting Vera and Reunion, with no success. Later he calls Hayato before the confrontation with the other traditonalist masters so that the other massters would not kill him, allowing him to pass down secrets of Northern Board Strike before he passes on.