Froboz Mumbar is the author of the well-known books, "The Great
Underground Empire: A History", published in 896 GUE by the Frobozz
Magic Book Company (This book is the source of many historical details
quoted by this Encyclopedia), and "The Early Myths of Frobozz," published in 880 GUE.
was the one to discover the so-called Royal Diaries of Zilbo III in the
Largoneth Archives shortly after 860 GUE. Although he carefully
analyzed the diaries, still today they have been the matter of some
controversy in detailing the backdrop of the 659/660 GUE New Year's
Revolt. He also believed that Wurb Flathead's ineptitude was the only reason the empire collapsed at all.