diatrekhon aster lonkhe
Spear-tip of the Star Traversing the Skies
The spear wielded by Achilles, gifted to him by his father Peleus (who in turn received it as a gift from Chiron). He used it to kill Penthesilea during the Trojan War.
It didn't receive its design until the anime premiered, meaning he is also often portrayed with a generic spear.
