Colonel Percy Fawcett was a British archaeologist and explorer. He disappeared on the quest to find "Z," which he believed to be an ancient lost city in Brazil. His first expedition was in 1906 to Brazil, where he mapped an area for the Royal Geographic Society. On his seven expeditions in the following 18 years, he claimed to encounter many unknown species of animals (some of which have now been discovered and given names, such as the Double Nosed Andean Tiger Hound.)

After fighting in WWI and returning to Brazil, Fawcett and his men disappeared in 1925. Many myths and legends exist surrounding the disappearance of Col. Fawcett's expedition. Over 100 potential rescuers have died trying to find Fawcett.

Col. Fawcett is said to have been an inspiration for the character Indiana Jones. Arthur Conan Doyle's "The Lost World" is based partially on the story of the lost city of "Z."