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Grandmaster Ratte' (born April 1970, formerly known as Swamp Rat and then Swamp Ratte') is one of the founders of the Cult of the Dead Cow hacker group, along with Franken Gibe and Sid Vicious. His official title in the cDc is "Imperial Wizard of ExXxtasy."
Ratte' has also produced and performed much of the music available for download from the cDc's website, including work by Hugh Gallagher.