This interesting story started during the Diana`s early days of love with Phantom. World heavyweight boxer Chasty meet with Diana at fencing club and fell in Love with her, but Diana ignored him because she found his true love in Phantom. Chasty forcefully tried hard over Diana and continue to irritated her. Chasty tried to bully over Phantom when he knew the affair with Diana.
Chasty challanged Phantom in a friendship match in act of jealousy and deafeted by Phantom. Chasty became more angry and jeolous and again challenged Phantom in a tournament and convinced phantom by saying that he will donate the whole prize money to betterment of orphan childrens.
You Have to read the full graphic comics to know the interesting end of the story