|This article is about the second Doctor X. For her predecessor, see Doctor X.|
A former member of the Action Man Programme, Mercy Gale has taken on the role of Doctor X to bring about a world free of the constant tug-of-war between terrorist organizations and the forces that fight them.
After graduation, Mercy Gale was recruited by MI6 and was a loyal agent for the United Kingdom. Before she turned thirty, she transferred to the Action Man Programme, becoming head of intel within a year. While tracking down a chemical compound, she concluded Doctor X had it, and sent Mike Brogan, the Action Man, to take care of it. He crashed through the roof and fought off the 1500 college students mutated by Doctor X using the chemical. When all was said and done, Gale realized how there seemed to be no end to the constant react-and-counter modus operandi of organizations like the Action Man Programme. While investigating the site, she happened upon the dead body of Doctor X himself, buried under rubble that Brogan caused. Being the only one who knew of the doctor's death, Gale took the opportunity—she would assume his position.
As Doctor X and as Agent Gale, she was able to manipulate both sides to accomplish her goals. One which included protecting London from the Decepticon invasion of Earth. Another was acquiring an interplanetary propulsion system, but Ian Noble's interference as a spy caused one of her agents to overload the antimatter generator and Mike Brogan was forced to sacrifice his life to save the world. Ian Noble would subsequently become the next Action Man, which Gale didn't mind; Brogan would have not fit into the world she envisioned, while Noble could be tempted.
As an agent of the AMP, Gale, with Agent Salmons, assisted Ian in cleaning up a derailed train and comforted Action Man on his guilt over the death of his predecessor. Gale conceived a new plan: to acquire an O.S. codex and the IP addresses of American agents so that she could decode all secret American communications and access their information on alien technology. The O.S. codex was in Hauteville House on Guernsey so, via the mercenary Colditz, she hired a group to act as extremist separatists to force Director Bestley to retrieve the O.S. codex. Ian succeeded at doing so. In the meantime, Gale was assigned to rescue the hostages the separatists had kept, but Ian took care of that aspect as well. After getting the codex, she had the Professor at the Chateau scrape IP addresses from American agents. Gale meant for Ian disguised as Colditz to walk in and acquire the data and leave without issue, but the doorman having had a fling with Colditz blew Ian's cover, and Gale was forced to improvise. After apparently killing Salmons, she revealed to Ian that she was Doctor X.
Taking Ian to a secluded spot in the Bavarian Alps, she faked her death while giving a monologue to Ian about her motivations and plans. The surprise survival and appearance of Salmons gave Ian the opportunity to break free of his restraints and hitch a ride with Gale to her airship rendezvous with her associate, Storm Shadow. The arrival of Bestley and Chan put the kibosh on this meeting, and the airship was destroyed.
Despite the AMP's belief, Doctor X and Storm Shadow survived the explosion and proceeded on a plan with another partner to ensure the survival of their planet.
At her cabal's Brasnya facility, Doctor X had a teleporter readied to transport Kreiger and Ironblood in to finish their scheme. Doctor X, however, planned to be gone for when Mayday and co. would arrive to discover what Kreiger had done to Mike Power.
Doctor X was among the villains contacted by Baron Karza with an offer to begin working for him after he completed his conquest of Earth.
- Doctor X at the TFWiki