The First has "dragons" - the glider-type enemies that look like lizards until they go into attack mode.

It's not clear if they have any relevance to the alien dragons of the Source or if they're just something unrelated that visually resembles them.

Also there is no in-game reason to draw a connection to Au Ra being something special, beyond their appearance. They don't have extended lifespans or special powers or anything. As far as we're told, they're just another variety of oddly-shaped-but-otherwise-normal human.