(a.d. 12 - 41) emperor of the Roman Empire (a.d. 37 - 41). At first h e ruled with moderation but a serious illness a few months after his accession is believed to have affected his sanity. Thereafter he behaved as an increasingly bloodthirsty and vicious tyrant. See also Roman Empire in this glossary.—Conquest of Chaos Approved Glossary (8.7.92)