|This article is about the statue of Poseidon near Samos. You may be looking for the statue of Poseidon in Achaia.|
During the Peloponnesian War, the Spartan misthios Kassandra visited the statue at the request of the Athenian sculptor Phidias to find a symbol. At the same time, she recovered a trident from chest allegedly belonging to the god of the sea.
Sometime thereafter, Kassandra returned to the island where she met a projection of the Isu Aletheia. Kassandra was appointed by the her as the Keeper of the Staff of Hermes Trismegistus and was tasked to look for Theras, a friend of the late Phidias.