Erko

From Memory Alpha, the free Star Trek reference.

Erko was a Kostolain native, who served as the chief assistant to Campio, the third minister to the Conference of Judges.

In 2367, while Campio was engaged to Lwaxana Troi, Erko served as Protocol Master for the proceedings. A conservative, traditional soul, Erko is mortified by disrespect for Campio, and, apparently, by nude Betazoid women. Troi disliked Erko so much that she began to refer to him as "Jerko". (TNG: "Cost of Living")

Erko was played by actor Patrick Cronin.