Shadow people

Explore the intriguing phenomenon of shadow people and delve into real encounters and experiences. Discover the secrets behind these mysterious figures and unlock the truth behind their existence.
Shadow people - PsychonautWiki

Shadow people are defined as the experience of perceiving patches of shadow in one's peripheral or direct line of sight that appear and behave as living, autonomous beings.[1][2][3] Due to the unique behavior of these hallucinations they can be considered as a distinct sub-type of autonomous entity.