Starring one of my faves: Hephaestus, the God of blacksmiths, craftsmen artisans, sculptors, metals, metallurgy, fire and volcanoes-- as per Wikipedia. All I know is he creates awesome weapons!
Achilles and Hector are heroes in the Trojan War; they are Greek and Trojan respectively.
As for the guys in the last panel, you probably know who they are. I don't consider myself an Avenger fan but I had it stuck in my mind to have Hephaestus creating some of their weapons; I even considered having him create Thor's Mjolnir (from Norse Myths; definitely not Greek!).