Warlord

A warlord is a term used to describe a person who has assumed power over an area, and arbitrarily controls this area trough armed force.

During the 22nd century, warlords existed on Preenos. 

An unnamed warlord existed on Kelis' homeworld in the late 24th century. 

In 2374, Major Kira Nerys called the Female Changeling an "intergalactic warlord" and claimed that she was trying to turn Odo into one.