is the Athenian king Erechtheus, whom Poseidon killed for choosing Athena over him as the city's patron god. When the Athenians worshiped Erechtheus on the Acropolis , they invoked him as Poseidon Erechtheus . [ edit ] List of heroes Heracles Theseus Asclepius Achilles at Leuce Aeneas Perseus Erechtheus at Athens