Hobgoblins

Judging by their normal behavior (jumping around excitedly, making all manner of nonsensical noises while laughing maniacally), it would be very surprising to the layperson that these creatures could ever function as something resembling a cohesive unit. That is why they rely so heavily on the guidence (that is to say, let's be honest, brain control) of their evil leader, Dr. Fiendlee. They have no concern whatsoever for the well-being of other creatures, each other, or the group's overall prosperity in the long term. Yep. They really are just a bunch of mischievous little peabrains who can't see two inches in front of their own nose (metaphorically speaking). Great thinkers are often baffled at how is they could have been the cause of so much destruction.