Mumboz Agrippa was, at one point, a foreman for the Frobozz Magic Cave Company. Heavily involved with the hollowing of an ancient volcano in the Eastlands (sometime between 778~9 GUE), his job was related to the safety factors involved in constructing caverns over very weak rock strata. He also authored the book "Construction of the Empire" sometime between 667-896 GUE. Mumboz is a direct descendant of Cornelius Agrippa.

SOURCE(S): Zork II, Zork Nemesis, The Encyclopedia Frobozzica