Fuan No Tane/Fuan No Tane Plus GIF Collection - 12/28/11

original: 隠り沼（こもりぬ）の | ガト・・・ [pixiv] 

A doppelgänger, also spelled doppelgaenger is a paranormal double of a living person or any person, typically representing evil or misfortune.  In the vernacular, the word has come to refer to any double or look-alike of a person. 

The idea of a doppelgänger is sometimes similar to that of an “evil twin.” The word also is used to describe the sensation of having glimpsed oneself in peripheral vision, in a position where there is no chance that it could have been a reflection. Doppelgängers often are perceived as a sinister form of bilocation and are regarded by some to be harbingers of bad luck. In some traditions, a doppelgänger seen by a person’s friends or relatives portends illness or danger, while seeing one’s own doppelgänger is an omen of death.

Random fact: I personally encountered doppelgangers of my classmate, mother and sister. They make fun of me and get me paranoid @_@