In Greek mythology, Pandora’s husband when she opened the famous container was Epimetheus.
Epimetheus was the brother of Prometheus and belonged to the race of Titans. His name is commonly interpreted as “afterthought,” contrasting with Prometheus, whose name means “foresight.” Zeus sent Pandora to Epimetheus after Prometheus had stolen fire for humanity.
Prometheus had warned his brother not to accept gifts from Zeus, but Epimetheus accepted Pandora. In the later and more familiar version of the story, Pandora opened the container she had been given, releasing troubles into the world. The myth does not make Epimetheus the person who opens it; Pandora does.
The story appears most fully in Hesiod’s Works and Days, where Pandora is associated with humanity’s suffering. Ancient Greek accounts describe a jar rather than a modern box, a detail that later translation helped change.