From Halopedia, the Halo wiki
Gábor Zsolt was a human who listened to Benjamin Giraud's Hunt the Truth audio journal in 2558. After Giraud's entries revealed a massive coverup by ONI about Master Chief's backstory, Zsolt mailed Giraud an audio email expressing excitement about the conspiracy. He expected there to be tons of murder and bribes behind the scenes to keep something of this scale hidden.
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