John was just an ordinary regular teenage boy who is in high school. Until suddenly, an evil gang appeared and he attacked them and beat them up with his self-defense moves. His parents, Percy and Gloria Walker, were secretly spies and were hiding it for the past 14 years. His personality is that he’s determined, courteous, dynamic, resourceful, pro-active, and helpful. It was then revealed that he is also a cousin of Agent X (A.K.A. Frank Rogers) other than just Harry Parson. He is also cunning and fierce.