Reptoids, also known as Reptillians or Draconians, are scaly, humanoid, sapient beings which allegedly live in the real world. They are said to live secretly on planet Earth, and are often linked to alien abductions and UFO reports, and are also said to be involved in some way with the Illuminati, possibly the masterminds behind it. They even have ties to history and biblical text. They are said to be a very hostile and highly intelligent species, and are one of the most feared species in the Milky Way Galaxy.
Many people say that reptoids have been living among us for thousands of years, disguised and playing important roles in human society.
Source: http://aliens.wikia.com/wiki/Reptoid
