Hypno leech
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A hypno leech was a means of controlling someone's mind. Vienna Salvatori used one on Sargeant Lane to force him to accept her credentials and allow her access to the Kreyfin compound on Karnos Delta. Information, such as one's false name, had to be programmed into the hypno leech. Vienna noted that once the victim started to ask questions, that the battery within the leech was running dry. Before killing him, she told Lane that hypno leeches had very short battery life. (AUDIO: Bad Faith)