Doppelganger, is a very interesting word to any reader who comes across it for the first time, but it simply means (“double goer”) is a look alike or the double of another living person sometimes portrayed as a paranormal phenomenon, and is usually seen as a harbinger of bad luck. In other traditions and stories, they recognize one’s double goer as an evil twin. I find this to be a very intriguing and interesting topic because not only in Science Fiction but also in reality persons who are born as identical twins sometimes share complete opposing views on life or the way one may look at something differently in a negative way, of, or relating to do criminal acts. In Science Fiction it is much different. We can see one person change into so many different characters weather good or bad so as to gain his or her own triumphs through ulterior motives.