This paper re-evaluates the narrative roles occupied by Geryon and Herakles in Stesichoros’ Geryoneis in the light of contemporary thinking about Herakles’ apotheosis. It proposes that Stesichoros activates his audience's awareness of Herakles’ fated divinity in order to reframe the hero versus monster encounter not as a duel between two mortal heroes – the usual interpretation – but as a showdown between a hero and a god. This reorientation destabilizes an audience's sympathies and self-identification, forcing a re-evaluation of the nature of both heroism and humanity. Following a discussion of the potential narrative roles in play, the prominence of Herakles’ apotheosis in the sixth century and its salience for Stesichoros’ audience is established. The apotheosis is then applied as a complementary lens to the long-recognized Iliadic intertexts in a reinterpretation of the encounter between Geryon and Herakles on Erytheia. Finally, the use of the apotheosis as a lens for interpreting two fragments beyond Erytheia is considered.