despot:

anyone who holds absolute power, typically one who exercises it cruelly

despot:

anyone who holds absolute power, typically one who exercises it cruelly

(Noun)

Example Sentences:

Ramayana:  As Ravana conquered more and more parts of the universe, other competing demoniac races soon recognized that he was a despot and submitted to his overlordship.

Mahabharata:  Kamsa was a despot who unhesitatingly killed six of his newborn nephews in cold blood in front of their parents.

Bhagavad-gita:  Demons are despots who are dominated by an inner despot: their own uncontrolled mind.