Icheb wrote:
Pierson's puppeteers from Larry Niven's Known Space stories:
http://en.wikipedia.org/wiki/Pierson%27s_Puppeteer
Niven's responsible for most of the really good aliens in SF, from the puppeteers to the kzinti (descended from their planet's equivalent of plains cats, they're short-tempered and warlike; their females are non-sapient) to kdatlyno (they see by sonar, and use touch-sculpture in place of writing) to thrintun (they ruled the galaxy a billion years ago, by using the Power, a sort of telepathic hypnosis; they didn't evolve a very high intelligence, because they only needed to be so smart with the Power, and were eventually overthrown by their clever tnuctipun slaves. Their last act was to use a massive psychic amplifier to command every sentient being in the galaxy to die. Their yeast-plants may have been responsible for most of the sapient life that evolved later. They left behind artifacts in stasis boxes, as well as things like rocket trees, Silvereyes sunflowers [reflective petals can focus sunlight into a deadly weapon], and the tnuctipun-designed bandersnatchi [single-celled intelligent beings the size of a large whale, with chromosomes as thick as your arm, they're immune to mutation, and to the Power]). And all those are just in the Known Space stories! (And I haven't even touched on the Pak, or the near-human species on the Ringworld...)
Then there were the Moties, created in conjunction with Jerry Pournelle, as well as the fithp...
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