Eternity decides that the universe is too small for these 2 evil races to exist. One of them most be eliminated, so he directs them to settle it through total war with the final result being genocide for a race!

The Brood

http://images.google.com/imgres?imgurl=http://www.marveldirectory.com/pics/alienpics/brood.gif&imgrefurl=http://www.marveldirectory.com/alienraces/brood.htm&h=285&w=490&sz=51&hl=en&start=13&tbnid=s_2tgvGNla95XM:&tbnh=76&tbnw=130&prev=/images%3Fq%3Dthe%2Bbrood%26svnum%3D10%26hl%3Den%26lr%3D%26rls%3DGGLG,GGLG:2006-03,GGLG:en%26sa%3DN vs.

The Dire Wraiths
http://en.wikipedia.org/wiki/Dire_Wraith

Which evil race are we left with?