Tyrant is the exclusive class of Baal in Disgaea: Hour of Darkness and its remakes. This class can only be fought once per playthrough (any subsequent battles will be against the Uber Prinny class, which is almost three times as powerful). The title of "Tyrant" can also be gained by Laharl upon victory, replacing his Demon Prince title. This change will make nearly every Dark Assembly vote be accepted without bribes, as long as Laharl is the one trying to pass the bill. Laharl will not revert back to a Demon Prince upon starting a new cycle.
“A powerful demon who was about to take over all the Netherworlds across the dimensions. Baal was sealed away by King Krichevskoy.”
—The World of Disgaea