 Porphyrion is named on a sixth-century BC black-figure pyxis (Getty 82.AE.26), where he and the Giant Enceladus oppose Zeus, Heracles and Athena.He is also named on a late fifth-century BC red-figure cup from Vulci (Berlin F2531), and a fifth-century BC red-figure krater (Paris, Petit Palais 868), in both engaged in single combat with Zeus, and a late sixth-century/early fifth-century fragmentary BC red-figure cup (British Museum E 47), where his opponent is lost.Porphyrion was probably named on the Gigantomachy depicted on the north frieze of the Siphnian Treasury at Delphi (c. 525 BC), and he was one of the many Giants depicted on the second-century BC Pergamon Altar Gigantomachy frieze, where he is shown fighting Zeus.