Original: Eventually Zeus experienced great pain ; Prometheus , Hephaestus , Hermes , or Palaemon ( depending on the sources examined ) cleaved Zeus 's head with the double-headed Minoan axe , the labrys .
Simplified: To try and help Zeus with the pain , Prometheus , Hephaestus , Hermes or Palaemon cut his head open with a Minoan axe .