According to Timothy Gantz, the late author of the encyclopedic
Early Greek Myth, two of the
epithets (
eriounios and
phoronis) by which Hermes is known may mean 'helpful' or 'kindly'. Hermes taught his descendant Autolycus the art of thievery and enhanced Eumaios' wood-chopping skills. He also helped heroes in their tasks:
Hercules in his descent to the Underworld,
Odysseus by warning him about Circe's treachery, and
Perseus in the beheading of the
Gorgon Medusa.
Hermes Argeiphontes helped Zeus and Io by killing Argus, the hundred-eyed giant creature Hera installed to guard the heifer-Io.