In Greek mythology, Epimetheus (/ɛpᵻˈmiːθiəs/; Greek: Ἐπιμηθεύς, which might mean "hindsight", literally "afterthinker") was the brother of Prometheus (traditionally interpreted as "foresight", literally "fore-thinker"), a pair of Titans who "acted as representatives of mankind" (Kerenyi 1951, p 207). They were the sons of Iapetus, who in other contexts was the father of Atlas. While Prometheus is characterized as ingenious and clever, Epimetheus is depicted as foolish.
According to Plato's use of the old myth in his Protagoras (320d–322a), the twin Titans were entrusted with distributing the traits among the newly created animals. Epimetheus was responsible for giving a positive trait to every animal, but when it was time to give man a positive trait, lacking foresight he found that there was nothing left.
Prometheus decided that humankind's attributes would be the civilizing arts and fire, which he stole from Zeus. Prometheus later stood trial for his crime. In the context of Plato's dialogue, "Epimetheus, the being in whom thought follows production, represents nature in the sense of materialism, according to which thought comes later than thoughtless bodies and their thoughtless motions."
According to Hesiod, who related the tale twice (Theogony, 527ff; Works and Days 57ff), Epimetheus was the one who accepted the gift of Pandora from the gods. Their marriage may be inferred (and was by later authors), but it is not made explicit in either text.
In later myths, the daughter of Epimetheus and Pandora was Pyrrha, who married Deucalion, a descendant of Prometheus. Together they are the only two humans who survived the deluge.