From Halopedia, the Halo wiki
Chris Stillwell is a human who listened to Benjamin Giraud's Hunt the Truth audio journal in 2558. After Giraud's entries threatened to reveal the dark beginnings to Master Chief's heroism, Stillwell mailed Giraud an audio email where he claimed Giraud was doing this just to appease his own ego. Stillwell claimed to be a fan of Giraud, but urged him to cease Hunt the Truth before he wreaked irreparable damage to the Master Chief's legacy.
Chris Stillwell is voiced by Christian Bryant of the popular YouTube channel.
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