In this story, Frank gets the idea of the skull from his son, Will, who gives him a T-shirt with the logo on it from a trip he had in Puerto Rico and says that the skull is meant to ward off evil.

In another story, The Punisher’s skull is meant to taunt his targets. Issue #52 of The Punisher Invades the ‘Nam comic released in 1991 sees Sgt. Frank Castle volunteer for a suicide mission ...