This could be the negative archetype of the paternal figure. You may fear being like this. || It could equally signify that you are obligated to do things against your will. The tyrant, in this case, is the person or situation that is restricting your liberty in real life.
Oneiric oracles say that the meaning of this dream is the contrary to what it suggests. You will soon meet someone who is very kind and happy.
[1]Dreams of a tyrant reflect your own inner critic and shadow. Consider this dream to be a test, a rite of passage and an opportunity for you to become more -integrated and empowered.
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