The Theseum, or Temple of Hephaestus (5th century BCE), seen from the Agora in Athens. The blacksmith god Hephaestus played a crucial role in the birth of Athena, the renowned goddess for whom Athens was named. It seems that Zeus, the head honcho of the Olympian gods, suffered from splitting migraines. With no Excedrin handy, the only available remedy involved Hephaestus walloping Zeus’ head with an axe. From the resulting cleavage sprang Athena, fully grown and clad in armor to boot. Popular entertainment seems to have featured excessive violence millennia before movies and television.