Is Achilles the headstrong runner

No. Achilles is the man who was killed because he was shot in his weak spot the Achilles.

This is his story.

When Achilles was a little boy his mother wanted him to become a hero and be invulnerable. So she dipped him in the river styx. She held him by the ankle so the ankle was his weak spot. One day in battle he was shot in the ankle and was killed. That why we call it the Achilles heel of our foot.