Nikki was a frequent nickname for Nikolai Vorsoisson, used by his mother Ekaterin Vorsoisson and his late father Etienne Vorsoisson.


It is possible that after his mother married Miles Vorkosigan, he may have been adopted into the Vorkosigan family, in which case his full name would be changed to Nikki Vorkosigan; even if this is the case, it is highly unlikely that he would be in-line to inherit any of the responsibilities associated with the Vorkosigan family. 

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