Zeus' Lightning Bolt

Hephaestus made the thunderbolt for Zeus along with the trident for poseidon and the pitchfork for hades.

In Wrath of the Titans, it was first seen, along with the others, when Zeus was in the Underworld. It was stolen and wielded by traitrous god, Ares, shortly before Zeus' capture. Because it was wielded by the God of War, it was the last ingredient Perseus acquired for the Spear of Triam, the only weapon that can kill Cronus. It's last use was when Perseus combined the three objects, creating the Spear of Triam. Using it, Perseus was able to kill Cronus and save the world. It was lost after Cronus' defeat.

Makaria found her uncle's lightning bolt and briefly wielded it.