Vessel

This is based off of a dream I had a few days ago; it had something to do with spiritual possession being the results of alien experimentation. According to this eerie pale-skinned brunette girl (who oddly enough resembled a friend of mine), sufficiently advanced aliens from another dimension would genetically engineer certain humans so that they could be used as puppets or mouthpieces through which the aliens would interact and influence the rest of us. The genetic alterations were apparently hereditary, since the possessed individuals in the dream world seemed to have been direct ancestors and descendants of each other. It was hard to tell if they were just puppets fully possessed by the alien entities, or if they functioned as third parties between the higher and lower beings.