Pterenians

Pterenians were an old civilization located in Heliopolis, dating back from the early Second Era. Their entire culture has been erased after the Gargantua Catastrophe.
Pterenian people were loosley defined as thrill-seeking and very active. Many of their inventions was the result of their desire for discovering new things.
From the few records found, it seems they were initially a fishing based society who united with Edafosian folk, thus creating a larger society which sprouted many innovations. Scientists are unsure, but it's theorized Pterenians believed in multiple gods, although most of them have been lost.