EPHIALTIS

[Greek] Ephialtis was one of the Aloadae, the son of Poseidon. He was a Greek who allegedly told the Persians of the Greek position during the battle of Thermopylae in 400 BCE. Along with his brother, Otus, Ephialtis was colossal in size. Together, Ephialtis and Otus battled the gods. Every year, the brothers grew an ell in breadth and a fathom in length, and within nine year they were 36 feet tall. Because the two were founders of Naxos and Boeotian Ascra, they were worshiped as heroes in those cities.