Nonnus makes Echidna the mother of an unnamed, venom spitting, "huge" son, with "snaky" feet, an ally of Cronus in his war with Zeus, who was killed by Ares. The Harpies, in Hesiod the daughters of Thaumas and the Oceanid Electra, in one source, are said to be the daughters of Typhon, and so perhaps were also considered to be the daughters of Echidna. Likewise, the sea serpents which attacked the Trojan priest Laocoön during the Trojan War, which are called by Quintus Smyrnaeus "fearful monsters of the deadly brood of Typhon", may also have been considered Echidna's offspring. Echidna is sometimes identified with the Viper who was the mother by Heracles, of Scythes, an eponymous king of the Scythians, along with his brothers Agathyrsus and Gelonus (see below).