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Leon Stephens was a human who listened to Benjamin Giraud's Hunt the Truth audio journal in 2558. After Giraud's entries revealed fabricated stories being spread by the UNSC about the Master Chief, Stephens sent Giraud an audio email where he said he supported Giraud's work and had a theory of his own. Stephens speculated that "Master Chief" was not a single person but could possibly be several supersoldiers all operating under one code name. Uncertain of his theory, he asked Giraud for input on the question.
Stephens was voiced by Jack Olson.
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