Diomedes

In the Achaean cycle Diomedes is presented as the son of Tydeus and Deipyle (grandson of Adrastus) and a leading warrior in the Trojan War; after subsequent campaigns he becomes king of Argos and in later traditions is credited with founding cities in Italy. Separately, an otherwise distinct mythic figure named Diomedes appears in Heracles' cycle as a Thracian king who owned the man-eating Mares of Diomedes. The supplied sources treat these as different narrative figures who share a name rather than as a single supernatural being.

Source traditions portray Diomedes as a human heroic warrior and king rather than a supernatural form. A surviving descriptive tradition (as cited from Dares the Phrygian) depicts him as "stocky, brave, dignified, and austere," loud in the war-cry, hot-tempered, impatient, and daring. Classical iconography and literary depiction represent him with the accoutrements of an epic Greek warrior and later as a princely/kingly figure; no nonhuman or uncanny corporeal traits are recorded in the provided material.

Within Homeric and post-Homeric tradition Diomedes is renowned for martial prowess—ranked among the best Achaean fighters after Achilles and comparable to Ajax and Agamemnon—and has an aristeia (noted heroic period of achievement) in epic accounts. He exercises political leadership as king of Argos after the Epigoni, bringing stability and wealth to his realm, and later traditions attribute to him the role of founder or colonizer of cities in Italy. References to his name's etymology ("god-like cunning" or "advised by Zeus") reflect a lexical meaning rather than an independently attested supernatural power in the supplied sources. The Thracian Diomedes functions in the Heracles-cycle as an antagonistic king whose mares are legendary.