Pandora’s husband when she opened the jar later called Pandora’s box was Epimetheus.
Epimetheus was a Titan associated with hindsight and the brother of Prometheus, whose name is linked with forethought. In Hesiod’s account, Zeus sent Pandora to Epimetheus after Prometheus had angered the gods by giving fire to humanity. Although Prometheus warned him not to accept gifts from Zeus, Epimetheus welcomed Pandora.
The famous opening episode appears in Hesiod’s Works and Days. Pandora releases troubles into the world, while hope remains inside the vessel. The Greek word in Hesiod’s text is usually translated as jar, not box; the box image became dominant through later translation and artistic tradition.
Epimetheus is sometimes confused with Prometheus because both belong to the same Titan family and their stories are closely connected. Prometheus is the fire-bringer, but Epimetheus is the figure who receives Pandora and becomes her husband.