Brin is a Banuk shaman who can seeminly see visions of the past and the future by drinking machine blood. These visions from each robot animal (Sawtooth, Corruptor, Stalker & Thunderjaw respectively) are apocryphal and hard to make out, though there are some notes of interest in there (such as Brin knowing the Corruptors aren't made by GAIA, and of "Corruptor after Corruptor" which may alude to the Faro Plague). https://horizon.fandom.com/wiki/Acquired_Taste The final vision though, is not of the past but of the future. He sees a vision of the future in the Forbidden West, and of jungles on fire and the blue lights of machine eyes dying out in the eddies of ash, and Aloy herself seemingy dead. He talks about an onrushing storm, and a Metal World different to the one he knew (maybe a reference to the blight or to Far Zenith). We later see reference to him in the journal of an Oseram worker, where he's continuing on his way to the Burning Shores...