Half-Olympian son of Eos by Tithonus; king of Aethiopia. Came to Troy with Aethiopian and Eastern allies after Hector's death; killed by Achilles in single combat — Zeus weighed their fates on the scales (the kerostasia). Eos's grief and petition for his immortalization is the Aethiopis's structural-emotional core. The Colossi of Memnon at Egyptian Thebes were named for him by Hellenistic Greek visitors; the eastern colossus famously emitted a singing sound at dawn (cracked stone resonance) which Greeks interpreted as Memnon greeting his mother Eos.