Ragh was a Klingon in the late 23rd century who served as the field medic for the Imperial Intelligence operations on the Gorn planet of Seudath. He is based in the basement a safe house of the warehouse district of Tzoryp operating as a pest control service.
Ragh served under the section chief Hegron. Hegron was not pleased with Ragh's constant drinking of bloodwine and wanted a regular doctor, however the head of Imperial Intelligence reasoned that the Seudath mission could do with a field medic. (VAN - Declassified novella: The Stars Look Down)