This emperor's army defeated Vandals and Ostrogoths when he sent Belisarius to re-conquer North Africa and Italy.
One author claimed that this ruler's head could disappear and reappear, which proved he was actually a demon. This man's subordinate John the Cappadocian secured the Perpetual Peace with Khosrau I of Persia, and his deeds as ruler were attacked in the Secret History of Prococpius. With help from his eunuch Narses, this ruler suppressed the Green and Blue factions of chariot fans, ending the Nika Riots. This emperor's army defeated Vandals and Ostrogoths when he sent Belisarius to re-conquer North Africa and Italy. For 10 points, name this namesake of a legal Codex, a husband of Theodora who ruled the Byzantines in the 6th century AD.
One author claimed that this ruler's head could disappear and reappear, which proved he was actually a demon.
Justinian I [or Justinian the Great or Flavius Petrus Sabbatius Iustinianus Augustus] &lt;SJW&gt;