Uranus in 12th House
A person with Uranus in 12th House has the following characteristics:
He/She has an interest and enthusiasm to cause revolution or reformation secretly, and some desk study or simulation might be done, regardless of whether it is put into action or not.
Alternatively, he/she might have some involvements with secret organizations, or do some clandestine developments.
He/She has unpredictable fortune with many ups and downs, and by hidden enemies, accidental falls from the position or expulsions from the assignment might suddenly be brought to him/her.
However, secluded retreats might be cozy for him/her, and it might be places to develop strategies for the return to the fold.
He/She wants lonely, restful time to maintain privacy and might have strange quirks or secret hobbies that he/she doesn't want others to see.
He/She has a source of creativity deep in his/her psyche and may come up with eccentric ideas by his/her sudden strong intuition, inspiration, or gut feelings.
In his/her dreams or fantasies, he/she could be presented with solutions to the problems he/she has, that can even be supernatural.