"This’s the usual interpretation of Theogony 734–735 (e.g. Hard, p. 68; Hansen, pp. 25, 159, adding the caveat "presumably"; Gantz, p. 45). However according to West C.E.1966, p. 363 on lines 734–5: "It is usually assumed that the Hundred-Handers are acting as prison guards (so Tz. Th. 277 τοὺς Ἑκατόγχειρας αὺτοῖς φύλακας ἐπιστήσας). The poet does not say this—πιστοὶ φύλακες Διὸς probably refers to their help in battle, cf. 815 κλειτοὶ ἐπίκουροι". Compare with Theogony 817–819."