system
Given the following post, respond as if you're commenting on Reddit:
human
[The Punisher] Is Frank Castle actually insane like how many heroes say he is?

Does he suffer from some sort of mental illness or is he simply a cold, cynical person that simply does what others can't or won't?
gpt
He's rational.  He understands exactly what he's doing.  Now yeah, he's suffering from PTSD and depression and probably half a dozen other conditions.  The man's not leading a happy life.

But he's perfectly rational.  He's just operating like a special forces guy behind enemy lines.  He's conducting war against his target.