Adrastus, one of the legendary Greek heroes, the son of Talaus, king of Argos. Driven from his country by Amphiaraus, he took refuge at Sicyon, where his maternal grandfather reigned, and ultimately became sovereign himself. Being reconciled to Amphiaraus, he returned to the throne of Argos. He took up the cause of his son-in-law Polynices against Eteocles, and joined in the expedition of the Seven against Thebes, being the sole survivor at the end of the struggle. Two years later he stirred up the war of the Epigoni, in which he lost his son AEgialeus. He died of grief at Megara. The Nemean games were believed to have been instituted by him.