Professor Joseph "Joe" Wagg was a scientist employed at the Institute for Technological Advancement and Research in San Francisco. He was "about sixty" in 1999. (PROSE: The Novel of the Film)

He designed an atomic clock for the countdown to the year 2000 and the new millennium. The Eighth Doctor stole his ID at the party for the countdown and used it to steal the beryllium chip in his clock, stopping the clock. (TV: Doctor Who) Wagg was given a new beryllium chip by Daniel Joyce. (PROSE: Unnatural History)

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