The 12 children of Gaea and Uranus who were huge and ruled the earth and heaven before the gods.They were Cronus, Oceanus, Tethys, Mnemosyne, Hyperion, Themis, Theia, Iapethus, Phoebe, Rhea, Coeus and Crius. Cronus was the youngest.With the exception of Prometheus and Oceanus the Titans battled with the Gods, and after they had lost they were locked into Hades's deepest cave Tartarus.