Rakal (Major)
Major Rakal was an agent in the Romulan Tal Shiar. 

In 2369, she was murdered by members of the Romulan underground movement so that Starfleet officer Deanna Troi could be surgically altered to take  for a mission involving the defection of Vice-Proconsul M'ret and his aides to the Federation. ()

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Romulans
Tal Shiar personnel