Inquisitor (Sarpeidon)
Inquisitor was a legal title to denote a person or being who was an agent associated with an Inquisition. 

On Sarpeidon, officials of the Inquisitional Tribunal were known by this title. When the Prosecutor warned James T. Kirk that the Inquisitor might find Kirk to be a witch, Kirk threatened to reveal to the Inquisitor that the prosecutor, too, was one as defined by the tribunal. ()

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Titles
Legal occupations