Kronos Vad was a famous historian and an acquaintance of Iris Wildthyme. (AUDIO: Kronos Vad's History of Earth Vol. 36,379)

His most notable work was his complete history of Earth. A copy of volume 36,379 of this work from an alternate universe that described an invasion of Earth by the Gomagog was found by Abby and Zara at the Archive, and left by them on Earth as a warning, with the hope that it could prevent it from happening in their own universe. (AUDIO: The Archive)

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