Alien Intelligences seem to reproduce very slowly, if "reproduction" is the proper term to use at all; some Intelligences in canon, such as the ruler of Rifts Atlantis known as Splynncryth, are given an age which implies a date of origin or birth, but the means by which the Intelligences replenish their numbers remains an unknown at present. In any event, it appears to be a slow process: in Palladium Books canon, less than a hundred or so Alien Intelligences are cited throughout the entire Megaverse, and the fear and hatred of these beings makes them prime targets for revenge, treachery, and even assassination-often at the hands of other, rival Intelligences.