According to the Greek mythology the Titans were a powerful race of deities that ruled during the Golden Age. They were defeated by the (
Olympians Greek Gods) led by Zeus during the War of Titans.
The Titans were imprisoned in the deepest part of the Underworlds, except those who did not fight alongside their leader Kronos (god of time).
Originally there were 12 Titans, six male the Titanes, and six female the Titanides. They were associated with various primal concepts, extrapolated from their names such as ocean and fruitful Earth (Oceanus), sun and moon, etc.
The twelve first generation of Titans gave birth several titans such as
Atlas ,
Prometheus , etc.