About Achilles
In Greek mythology, Achilles (also Akhilleus or Achilleus) was a hero of the Trojan War, the central character and greatest warrior of Homer's Iliad, which takes for its theme, not the War of Troy in its entirety, but specifically the Wrath of Achilles. Later legends (beginning with a poem by Statius in the first century AD) state that Achilles was invulnerable on all of his body except for his heel. These legends state that Achilles was killed in battle by an arrow to the heel, and so an Achilles' heel has come to mean a person's only weakness.