On the endless savannah of a long-extinguished colonial outpost, enormous beasts roamed supreme. More than forty meters long by terrestrial measurements, these behemoths were actually the transmuted offspring of the Star People.
Several features betrayed their human ancestry. They still retained stubby thumbs on their elephantine front feet, now useless for any sort of precise manipulation except for uprooting trees. They compensated this loss by developing their lower lip into a muscular, trunk like organ that echoed the elephants of Earth's past.
As bestial as they seemed, the Titans were among the smartest of the reduced sub-men that remained in the galaxy. Their hulking stance allowed for a developed brain and gradually, sentience re-emerged. With their lip-trunks they fashioned ornate wood carvings, erected hangar-like dwellings and even began a form of primitive agriculture. With settled life came the inevitable flood of language and literature; myths and legends of the bygone, half-remembered past were told in booming voices across the vast plains.
It was easy to see that, within a few hundred thousand years, Humanity could start again with these titanic primitives. Sadly, as a catastrophic ice-age took over the Titans' homeworld the gentle giants disappeared, never to return.