 The exotics inhabiting the Pliocene Epoch, despite being separated from the appearance of humans on Earth by millions of years, closely resemble the Tuatha Dé Danann and Firbolg of Celtic Mythology.The exotics are known as the 'Tanu' and the 'Firvulag', and together constitute a single dimorphic race.The Firvulag are the 'metapsychically operant' [see below] members of that race, and the Tanu are the 'metapsychically latent' half.