Martin (Firefly)

Martin was an agent in the Department of Mary Sues, originally from the Fireflyverse, where he had been a Space Pirate.

Until he died during the Macrovirus Emergency, he was the partner of Agent Lucien.

Source

 * "Mary Sue Invasion 2008" (RP), in which Martin is already dead and Lucien goes on a vengeful Sue-slaying rampage.