In the period after the mysterious Architects vanished from the galaxy millennia ago, several great civilizations rose in their place. The intellectual Columi species created a vast but peaceful empire, focusing on academic pursuits while droids and elaborate machines labored for them. As a result, the Columi evolved enormous craniums and tiny bodies.
The strange, reptilian Kwa, who achieved intersteller travel through Infinity Gates that allowed them to effectively teleport between worlds, rose and mysteriously fell, eventually devolving into simple lizards. The cephalopod Gree also reached their apex in this time, creating technological marvels that have rarely been equaled. Eventually, on the backs of these civilizations would come the Rakata and their Infinite Empire.