Leto II is a fictional character from the Dune series, created by author Frank Herbert. He is the son of Paul Atreides and Chani, and he becomes the God Emperor of Dune after undergoing a transformation that merges him with sandworms, granting him immense power and longevity. As the God Emperor, Leto II rules for thousands of years, guiding humanity along a path he believes is necessary for its survival. His reign is marked by strict control and a vision known as the Golden Path, aimed at preventing humanity's extinction and ensuring its future evolution.