Agent Carreg Sarna
Agent Carreg Sarna was a member of the Disturbing Acts of Violence Department up until his death at the hands of his partner, Tango Dioxide, during the events leading to the Reorganisation. He had been a spy for the DIS, eventually tasked with assassinating her, but accidentally poisoned Echo instead, allowing Tango to catch on and set up an ambush in which she stabbed him to death. He was written by Huinesoron.
Carreg was from the Real World, possibly Wales, judging by his first name.