Mystery Assassin

The 'Mystery Assassin is just that: a mystery assassin working separate from the PPC. His (as the Multiverse Monitor reports, the Mystery Assassin seems to be a male, and possibly a Gary Stu) agenda is unclear, but he has been shown to be hostile to both Mary Sues and PPC Agents, sweeping into the badfic to quickly kill the Sue before Agents can charge and assassinate, and then occasionally aggress the Agents before leaving.