Reptoids, also known as reptilians, are a fictional race of extraterrestrial beings often described as resembling reptiles or lizards. They are commonly associated with conspiracy theories that suggest they can shapeshift and infiltrate human society. The concept of reptoids gained popularity in the late 20th century, particularly through the works of authors like David Icke. Proponents of reptoid theories claim that these beings are involved in controlling world governments and manipulating events for their own purposes. Despite their prevalence in popular culture and conspiracy discussions, there is no scientific evidence to support the existence of reptoids or their alleged activities.