Acrisius, in mythology, son of Abas, king of Argos (1), and his wife Aglaïa, father of Danaë and brother of Proetus. After Abas' death the two brothers quarrelled; in their warfare they invented the shield. Proetus, defeated, left the country, returned with troops furnished by his father-in-law Iobates, and agreed to leave Argos to Acrisius, himself taking Tiryns; both were fortified by the Cyclopes. See schol. Eur. Or.965. See perseus (1).