Am besten gefällt mir der evil-twin:

An evil twin is the concept in fiction of someone equal to a character in all respects, except for a radically inverted morality. Symmetric.
If the evil twin is literally a twin brother or sister, it should be combined with the XFN value of sibling.
The evil twin value can be applied to a version of yourself from an alternate universe or timeline.

Die Idee zu XEN stammt von Brian Suda und Jeremy Keith und sollte nicht zu ernst genommen werden 😉

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