What were Byzantine emperors called?

Related questions

1. What marked the end of the Byzantine Empire?
2. What happened to Constantine?
3. Was the first crusade successful?
4. Who was the greatest Byzantine emperor?
5. Who is the heir to the Byzantine throne?
6. Was Constantine a good emperor?
7. Why was King Richard called the Lionheart?
8. Was the fifth crusade successful?
9. What is the significance of the death of Constantine XI?
10. Who owned Jerusalem first?

Tags

1. #emperors
2. #first
3. #byzantine
4. #constantine
5. #model
6. #ruler
7. #emperor
8. #great
9. #begin
10. #christian
11. #rebuilt
12. #later
13. #roman
14. #traditionally
15. #imperial
16. #regarded
17. #capital
18. #byzantium
19. #constantinople