Genie
Many Muslims believe that Jinn have lived on earth long before humans. Some even think that humans were made to replace them. The Jinn would have been the first who lived on earth, but God was unsatisfied with them, so God decided to create a new creature (humans). Before creating humans, God would have sent an army of angels to kill most Jinn. Some Jinn survived, and sometimes people might meet them. Jinn, however, can turn invisible and suddenly disappear or shift their shape for a while, so they are not recognized as Jinn.