Thor

Thor was the Norse god of thunder, lightning, storms, oak trees, strength, destruction, fertility, healing and the protection of mankind.

Thor's room in St. Francis' Folly features a sphere which can shoot lightning and a large hammer which falls and causes a block to fall alowing access to the Thor Key above.

Actually, it was a mistake from the team because as said, Thor is a Norse god and not a Greek god. But he's in the Grece level. In TRA the mistake was corrected and the god is re-named Hephaesteus.

Lara searches for Thor's hammer, Mjolnir, in Tomb Raider Underworld. Lara also searches for his gauntlets and belt.