An emperor is the head of state of an empire or other imperial-style government, such as the Centauri Republic.
“Mollari I was once Emperor of the Centauri Republic. He ruled over his people some time in the...Mollari I
“Tuscano was the First Emperor of the Centauri Empire. Around the Earth year 262, Tuscano became...Tuscano
“Morell was an Emperor of the Centauri Empire who reigned on Centauri Prime approximately twelve...Morell