From Halopedia, the Halo wiki
Daniel Card was a human who listened to Benjamin Giraud's Hunt the Truth audio journal in 2558. After Giraud's entries theorized that there were dark origins to the Spartan supersoldiers, Card mailed Giraud an audio email in which he declared he didn't care where Master Chief came from as long as he was keeping humanity safe, as he had in the Battle of Mombasa, Battle of Kenya, and New Phoenix Incident. He demanded that Giraud stop Hunt the Truth before the UNSC could arrest him.
Card is voiced by and named for Dan Hammill, known to the Halo community as.
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