Nia Brusk
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Nia Brusk was President Karnex's assassin. She was the first person the Eighth Doctor and Mary Shelley met on Draxine. Karnex, himself, controlled her so that she would assassinate him. He later terrorised the city, so she used the same technique that he used to make him immortal to destroy him. She died in the process. (AUDIO: Army of Death)