One who commands absolute obedience to his or her authority.
One who follows and is excessively obedient to authority.
Demanding obedience to authority; marked by authoritarianism; dictatorial, tyrannical.
Of, or relating to, or exhibiting strict obedience to an authority; favoring authoritarianism over civic and individual liberties.
Tending to impose one's demands upon others as if one were an authority.
Obsequious, flattering, toadying. In other words, eager to please.