In Homer's Iliad, Asteropaeus (Ancient Greek Ἀστεροπαῖος, "star-child") is leader of the Trojan-allied Paeonians, son of Pelagon and grandson of the river-god Axius by Periboea. Ambidextrous, he alone among Trojans draws Achilles' blood beside the Scamander before Achilles slays him; his armour becomes a prize at Patroclus' games.
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I.Paeonian champion
Asteropaeus arrives at Troy late — less than two weeks before the poem's action. In Book 12 Sarpedon chooses him with Glaucus as comrades for the assault on the Achaean wall. He can hurl two spears at once.
In Book 21 Scamander arms him with courage against Achilles. One spear hits Achilles' shield; the other grazes the right forearm and draws blood — the only Trojan in the Iliad to wound Achilles. Achilles still kills him and boasts that descent from Zeus outranks a river-grandfather. At Patroclus' funeral games Asteropaios' bronze-and-tin corslet and silver-studded sword are awarded as prizes.
II.Homonym note
Asteropaeus is this Paeonian ally alone; the atlas suffix -paeonian keeps him clear of any later namesakes.