Dopplegänger, also known as Similfuturus in High Galactic, was an advanced Force power that allowed a user to create a short-lived duplicate of themselves or an external object that was visually indistinguishable from the real item through the Force. Those who perfected this ability could create Force phantoms of any person of their choosing or trick an enemy into seeing more objects, such as droids, than were actually present.
The Force user could perceive all of the dopplegänger's senses, and to those interacting with it, the dopplegänger seemed real. The user could even interact with the world using telekinesis to move objects, furthering the believability of the illusion.
The dopplegänger could also be detected by all droid audio and video sensors and would fade away if the Force user was injured and ceased using the power.
Sometimes even a powerful Sith Lord might think that the projection was real.
Force phantom was similar to a dopplegänger, in that it was an astral projection of a being created through the Force, but it was a projection of something other than the user's own image. Force phantoms were most likely used only by the dark side, and usually exhibited corporeal properties and inflicted damage on living beings.
Luke Skywalker, Darth Tyranus, and Xesh all used this ability.
Darth Sidious once wondered if Darth Plagueis had used this power to trick him into making a foolish attack during training.
A distinct version of dopplegänger was also used by the Fallanassi, which allowed the creation of a perfect illusion of himself, or another object, that was visually indistinguishable from what was real. This illusion was not limited in size and could be both seen and heard, but, unlike other versions, lacked the ability to physically move objects via telekinesis.
The Jedi Padawan Ahsoka Tano wondered if this ability would work well on a whole army of clones in The Jedi Path: A Manual for Students of the Force.
The German spelling is "Doppelgänger," but the term is sometimes spelled as "doppelganger." In 1993's Star Wars Chess, Yoda casts two doppelgängers of himself to confuse Darth Vader before defeating the Sith Lord.
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