Chtzin
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The Chtzin were an arachnid species that operated on a hive mind. They had the ability to enter your mind and make you behave irrationally. The Chtzin were at war with the Primary Vanguard, after the fall of the Wrath Empire left a power vacuum, which they wished to seize. It was noted by Lieutenant Paley that Chtzin were so irrational that it was mathematically impossible to calculate their next move in battle. (AUDIO: Dead Drop)