[@mattmanganon]
How old do you envision your species? Because it would preferably be early into my history, which itself I plan on making ancient. Too recent, and the Rothrm wouldn't have bothered sparing a civilization in a war, especially as they have become experienced in the methods of species genocide throughout time. Early enough, but not too late, and the Rothrm would be more lenient and actually able to conduct interstellar warfare