Eurystheus

In the Heracles cycle Eurystheus' position as king who will receive and assign Heracles' penance is embedded in divine politics: mythic accounts explain that oracular decree and divine intervention (notably Hera's manipulation of births) ensured Eurystheus' precedence in rulership so that he became the mortal magistrate to whom Heracles must submit and perform the labours prescribed by the Pythia.

Primary sources offer little physical description of Eurystheus himself. Narrative episodes emphasize his behavior rather than bodily detail — notably an anecdote in which he is so frightened by Heracles' fearsome appearance that he hides in a subterranean bronze winejar — underscoring a characterization of timidity contrasted with his titular authority.

Eurystheus possesses no supernatural powers in the sources; his authority is political and juridical. He adjudicates the validity of Heracles' labours (accepting, rejecting, or stipulating conditions), issues tasks allegedly under divine sanction (the Pythia's command), and performs ritual acts of dedication (for example dedicating certain captures of Heracles to Hera). Behaviorally he often reacts with fear to Heracles and acts in ways that advance Hera's interests in opposing the hero.