Slann - History: Of all the races in the galaxy, the Slann claim to be, and may actually be, the oldest. The days of their bright empire are gone, but still they remain amongst the most enigmatic creatures of known space. The Slann evolved, matured and spread throughout the galaxy many hundreds of thousands or even millions of Terran years ago. During the heyday of their empire they discovered and nurtured many primitive creatures, encouraging the evolutionary process on countless worlds, eradicating or moving dangerous species, and seeding many planets with promising stock. For millennia they experimented and played with the galaxy, possibly creating many of the races of modern times in the process. But their empire dwindled, the pace of their civilisation slowed, and their genetic experiments were largely abandoned.The Slann retired from an active role in galactic affairs, falling into a long dream of indolence and introspection. They do not seem to have suffered from any physical conflict, there are no records of destructive wars or disasters. Instead, their racial motivations appear to have undergone a sudden and drastic change, so that they have lost all interest in material conquest and power. Their true reason for this retirement from galactic affairs remains unknown; some believe that the Slann discovered some unknown secret of the cosmos or even gained a supreme spiritual insight. In the realms of psychic-philosophy and mystic-technology the Slann certainly have no equals, fulfilling themselves by study of spiritual life-forces and the secret powers of other realities.It is known that the Old Slann were conscious of the existence of Warp entities, which they called the "Powers of Chaos". The Slann warned the ancient Aeldari of the dangers they would face in the future as a result of their own natures, including the cataclysmic Fall of the Eldar. Some of the Aeldari later heeded their warnings, leaving their homeworlds for the Craftworlds. During this time, the Old Slann not only taught the Aeldari about the dangers inherent to the Warp but also of the extraordinary benefits to be had from exploiting psychic abilities. When the Aeldari later expanded the Webway, they would refine and perfect much of the Old Slann's knowledge of the Empyrean.Some savants have also speculated that the Slann are the creators of the Jokaero species, given that the Slann are believed to have visited Old Earth on numerous occasions, coupled with the Jokaero's uncanny resemblance to Terra's orangutan primate species.After their retreat from the galaxy, the Slann resided in the galactic north, living upon a number of proximate, prosperous worlds. Their society remains closed to other intelligent races, but appears to be homogenous throughout, with a similar technical base, language and culture on each planet. Exceptionally, groups of Slann live as primitive Neolithic savages on a number of worlds beyond Slann space, including within Imperial space.Strangely enough, these primitive Slann are scattered throughout the galaxy, and probably comprise the remnants of what was once a much larger pattern of Slann settlement. These primitives have little or no contact with their technologically advanced kin and possess a culture reminiscent of that of Mesoamerica on Old Earth. The Slann are a curious people, rarely trading with other races and unpredictable when dealing with territorial disputes or any form of rivalry. There is little that the Slann want or need, and off-world traders often get the feeling that they are being watched and studied, and that the exchange of goods is of no importance to the Slann.