M, operating under the codename "M," is a high-ranking British Secret Service official whose true identity is Mycroft Holmes—the elder brother of Sherlock Holmes from Arthur Conan Doyle’s literary works. A master strategist for the British Empire, he coerces the protagonist into deploying their corpse reanimation expertise to advance governmental objectives. His central aim revolves around exploiting Victor Frankenstein’s research to overwrite global human consciousness, replacing free will with programmable obedience in reanimated corpses. Convinced that eradicating autonomy will eliminate conflict, he employs advanced analytical engines to transmit mind-altering signals derived from Frankenstein’s work, converting living humans into docile undead laborers.

During the narrative’s climax, M orchestrates a confrontation to merge every reanimated corpse into a singular collective consciousness under his dominion. The protagonist thwarts this scheme, resulting in M’s death. His ideology embodies cold pragmatism, prioritizing systemic control over individual agency, with his actions framing a critique of imperialist structures and the dehumanizing repercussions of technological exploitation.