The Tleilaxu are a fictional group from Frank Herbert's Dune universe, known for their advanced genetic engineering and biological manipulation. They are a secretive and isolationist society, primarily focused on creating and enhancing life forms, including the production of gholas, which are clones of deceased individuals. Their culture is deeply rooted in a unique religious belief system, emphasizing the importance of transformation and evolution. The Tleilaxu are often viewed with suspicion by other factions in the Dune universe due to their morally ambiguous practices and their willingness to exploit life for their own purposes.