Emperor

Emperor was a (male) monarch, usually the sovereign ruler of an empire or another type of imperial realm. Empress, the female equivalent, may indicate an emperor's wife (empress consort) or a woman who rules in her own right (empress regnant). Emperors are generally recognized to be of a higher honor and rank than kings.

Emperors and their Domains

 * The Emperor - the Time Lord emperor of the universe
 * Dalek Emperor - Dalek Empire
 * At least six different Emperor Daleks (a.k.a. Dalek Emperor) are believed to have existed, including Davros.
 * Cyber-Emperor - Cyber-Empire
 * Uvodni Emperor - Uvodni Empire