Make a species to go against aliens and predators

[alternicity]

Weyland Yutani Soldier Androids + Android 'Murderous Thieves'

And/or the pilots from Alien. Complicate the setting some.

[suupaabaka]

There is only one being that could hope to defeat either race.

That being is....

[Dave]

Maybe they will be defeated by simple bacterial micro-organisms?

[TheEndIsNigh]

Originally Posted by suupaabaka

Excelent needed a laugh

That being is....

However this'll test you all :-

Zanti misfits.

[sdoidge]

Originally Posted by khatab

Maybe the Borg..

They would probably get ripped to shreds but one might get lucky and implant some Nano-probs and voila Predator turns from friend to foe, and after assimilating the Predetor species' knowledge they coul out smart them and match them for fire power and actually have Borg Predators fighting non-asimilated Predators..

I was thinking borg too...but as they were originally. i.e. enhanced cyberneticly rather than becoming shuffling space zombies.

[Ross]

Just throw Arnie in there. He'll do the job.