Inquisitor

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

Within Cardassian culture, Inquistor was a title of an educator who works at a university on Cardassia Prime. In the 24th century, Tekeny Ghemor's wife was an inquisitor at the Central University. 

On Sarpeidon, officials of the Inquisitional Tribunal were known by this title

Untersuchungsrichter