Grens appear to be completely normal Pure Strain Humans... except for their deep green skin! They are intelligent and live secluded lives in harmony with nature. They inhabit only deep forests, where they cannot be seen or sensed by any creature until they reveal themselves. They will not use ancient technology and stubbornly refuse to learn any of the knowledge of the Ancients. Most tribes shun outsiders, although in some instances (30%), Grens may cooperate with Pure Strain Humans if approached in a non-hostile manner.