In the Pandora myth, Prometheus was Epimetheus’s brother and warned him about Zeus’s gifts.
Prometheus is one of the Titans and is especially famous for helping humanity. In Hesiod’s tradition, he offended Zeus through sacrificial deception and then stole fire for mortals. Zeus responded with a punishment involving Pandora, whom he sent to Epimetheus.
Prometheus advised his brother to reject gifts from Zeus, but Epimetheus accepted Pandora. This warning is an important structural contrast in the story: Prometheus represents forethought, while Epimetheus represents reflection that comes too late. Their names themselves preserve that contrast.
The Pandora story is sometimes retold as if Prometheus directly opened the vessel. In the classical narrative, however, the opening is associated with Pandora and Epimetheus’s household, while Prometheus’s earlier actions explain why Zeus sought revenge against humanity.