Here is what the Encyclopaedia Galactica says about the Smileys.<br/><br/>"The Smileys are a race of sadistic, expansionistic militarists.  Their wantonly comical appearance--almost literally that of a smiley face with arms and legs--belies a limitless capacity for violence and endless lust for conquest.  The Smileys are the purest sort of conquerors--they do not seek riches, nor pleasure, nor even political power.  They seek to conquer just for the sake of beating the crap out of other sentient beings.  They have never attempted to gain power through diplomacy, economics, or even espionage, save for clumsy attempts at covert military operations.  They seek only...carnage..."<br/><br/>"Smileys are generally not the smartest of creatures, but they are utterly fearless and do not seem to feel pain the way normal creatures do.  To them, combat is fun, and watching other creatures die is even more fun.  Some scholars argue that to Smileys, conquest is not a goal so much as an excuse to murder people wholesale."<br/><br/>(modified from StarThugs, p 79)