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WHAT'S THE KRYPTONITE?

Determine Your Protagonist's Most Significant Weakness (Achilles’ Heel)

Kryptonite is a fictional, radioactive ore from Superman's home planet of Krypton. It's the ultimate vulnerability of the otherwise invincible Man of Steel. It's also his fatal flaw that will be exploited by his enemies at every opportunity.

Character flaws are coping mechanisms, sometimes ones that are outmoded or just broken, and the plot happens to strip away the character's armor. In As Good as It Gets, Melvin Udall's (Jack Nicholson) physical weakness is Obsessive-Compulsive Disorder (OCD). He must lock the deadbolts on his front door with the same repetitive pattern, each and every time he enters or exits. So, in addition to washing his hands ...

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