This is the parent category for Byzantine Emperors. Articles should go in one or both of the subcategories, not here.
The Byzantine Empire is the name given to the Eastern Roman Empire from roughly the CE Fourth Century to 1453 CE. The distinction is made purely for historical reasons, as the Byzantine Empire was Christian empire with Greek cultural leanings as opposed to the pagan, Latin-speaking ancient Rome. Nonetheless, the people of the Byzantine Empire considered themselves to be Romans, and the emperors counted their line back to Augustus, although Constantine I, known as the Great, was the founder of Constantinople and the model followed by subsequent Byzantine rulers.