 He never really mastered Hokuto Shinken, relying on his sawed-off shotgun to finish off most of his opponents.After a botched attempt at killing Kenshiro, he is left with a hideously disfigured head as a reminder of his failure.Consequently, he hides his head by wearing an iron helmet and a section of plating over the disfigured portion of his face to control the constant pain it produces.