Shadow person
A shadow person (also known as a shadow figure or black mass) is a popular subject in circles of the paranormal and supernatural detailing beings resembling animate human shadows, sometimes interpreted as the presence of a spirit. == History and folklore == A number of religions, legends, and belief systems describe supernatural entities such as shades of the underworld, and various shadowy humanoids have long been a staple of folklore and ghost stories, such as the Islamic Jinn and the Choctaw Nalusa Falaya.