As superheroes go, Frank Castle, also known as The Punisher, doesn't seem like the most worthy candidate to warrant three different movie adaptations in 20 years. His mission is vengeance, and his superpower is just a van full of guns. Someone like Spider-Man or Batman requires a rich yet relatable backstory, explaining the relationship between his fate- or self-given powers and how he chooses to use them. The Punisher's logline is comparably simple (bad guys killed his family; now he kills bad guys), and no one needs to explain where he got his van or guns (probably Wal-Mart).
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