Liook Sujan

Liook Sujan are intelligent rocks. Grey, featureless and quite tall, more tna 1 and half meter and often two and half metre. They live on a rockball planet and have no spoken language. The Liook Sujan have Telepathic powers? and ESP-powers? but no kinetic powers?. They ar a silicon lifeform that feeds on solar radiation. They achieved intelligence a quarter of a billion years ago.

Despite the fact that they can't move they are an active race that have moved around the galaxy with the help of others and place observers in different places and so hav a galaxy-wide communication network. When threatened and whn an attack is morally justifiable they have mentally attacked other beings such as pirates or Verms.

Source: GURPS Aliens