Perseus , Heracles , Helen , Minos , and the Muses (by Mnemosyne ); by Hera, he is usually said to have fathered Ares , Hebe and Hephaestus . [ 1 ] In Greek, the god's name is Ζεύς Zeús /zdeús/ (Modern Greek /'zefs/) in the nominative case and Διός Diós