Nijat aliens were pretty straight forward combat wise, even the ones amongst them that were supposed to be smarter chose to attack with an intelligence that was barely above that of a beast. But then again so far all of the aliens that they have been facing so far all seemed to be the low level members of the race, the so called vanguard force of genetically engineered disposable swarms.
Cole really didn't want to see what a real member of the race looked like, because with how stupid these aliens were, it would be quite impossible for them to have grown large enough into becoming an interstellar empire, much less invent portal creating and trans-dimension hopping capabilities. But Cole would still stand by his belief that the portals looked like an asshole.