Ja'nette Marratin

Ja'nette Marratin was an identity that Nyota Uhura assumed during an undercover mission to the Dark Range Platform in 2293. Marratin was given the backstory of being a disgruntled Starfleet officer who had served for thirty years but had become embittered and sought some revenge on the Federation using surplus Klingon military hardware. (TOS novel: The Ashes of Eden).