Achilles' Heel



An Achilles's Heel was any type of weakness a character might have had.

Superman for example, was weakened by Green Kryptonite; making that his Achilles' Heel.

The term originated from Greek mythology, a reference to the legendary Achilles, who was a demigod and a soldier during the Trojan War.

External Link

 * [https://en.wikipedia.org/wiki/Achilles'_heel