In fiction and folklore a doppelgänger or doppelga(e)nger (/ˈdɒpᵊlˌɡɛŋə/ or /-ˌɡæŋə/; German: [ˈdɔpəlˌɡɛŋɐ], literally "double-goer") is a look-alike or duplicate of a living person, sometimes portrayed as a paranormal phenomenon, and in some traditions as a harbinger of bad luck. In other traditions and stories, the 'double-goer' is recognized as an evil counterpart.
Modern interpretations, action series in particular, have frequently played with the idea of intentional duplication as a form of magic, creating a living illusion of the caster. In Japan this was popularized by the manga series Naruto, where "shadow cloning" is a staple technique used by many characters.
In Shinobido Edit
The Mosu leaders Usuba and Ageha can create illusory copies of themselves in combat, but these illusions are fragile and will be dispelled if attacked directly. Shu the Cypress can also create copies of himself with the power of the Tenma Mirrors that unlike the Mosu's technique are as strong and resistant as a real human but not as strong as Shu himself, as demonstrated twice in his final battle against Zen. Kaede was also unintentionally created this way when the Gongen Mirror caught the reflection of a dying San.