Evil Twin Meaning

Example :   As a ploy to discredit the reformist politician, the opposing party had hired a lookalike to act as his evil twin and be seen in a variety of compromising situations.2003: Peter Halstead, Sea Sun [1]  ...we see the flip side, the evil twin, the dark side of addition. Human nature contains both a thing and its opposite in varying degrees of tension, and so for every plus there is a minus.2004: Bob Sullivan, Your Evil Twin: Behind the Identity Theft Epidemic [2]  ...[he]..lived his life under [another man's name], becoming his evil twin: Staas bought and sold homes, opened bank accounts, obtained credit, married twice, and was arrested at least three times.