Fred Porlock acts as an affiliate to William James Moriarty, executing meticulously planned schemes against corrupt nobility. Originating from Sir Arthur Conan Doyle's Sherlock Holmes stories, specifically "The Valley of Fear," where he appears as a minor criminal informant for both Moriarty and Sherlock Holmes, his role significantly expands beyond that initial depiction. Physically, he possesses jet black hair, pale skin, and grey or blue eyes. His slim yet slightly muscular build is often seen in his characteristic attire: a long-sleeved white dress shirt featuring blue rectangle cufflinks, navy blue pants secured by Y-back suspenders, a black coat, and a light blue scarf doubling as a hood. Bandages are typically wrapped around both forearms. A pen and notebook frequently nestle in his shirt pocket, tools for gathering intelligence on aristocratic crimes. He maintains a reserved, unsociable demeanor, speaking rarely except when reporting or commenting during operations. Despite this outward quietness, a fundamentally gentle and kind nature lies beneath, particularly evident in his concern for child victims of crime. This trait aligns him closely with William Moriarty, as noted by Moran, who observes both will act to help the vulnerable. Combat proficiency forms a core aspect of his skillset, demonstrating expertise with firearms, knives, and hunting rifles. He exhibits considerable agility in martial arts, effectively utilizing kicks, flips, and grapples during confrontations. His excellent balance facilitates roof-hopping and carriage-to-carriage jumps. Disguise constitutes another key ability; he crafts convincing alternate appearances, such as impersonating the murdered woman Frida to corner the criminal Lucien, posing as a deceased man aboard the Noahtic, and dressing as an old lady. These disguises are instrumental for gathering intelligence or luring targets into confessions. His primary function involves espionage and intelligence gathering for Moriarty. He methodically collects information on aristocratic crimes through observation and note-taking. Loyalty to Moriarty's goal of dismantling the British class system is evident, as he actively supports the plan to create controlled crimes in London targeting corrupt nobility to foster societal change, believing in the envisioned better world. Specific operations highlight his contributions. During the Lucien incident, Moriarty summoned him to locate the criminal; his disguise as Frida led to Lucien’s confession and punishment. In Durham, he and Moran assisted Moriarty in confronting university administrative assistant Dudley Bale, responsible for a barmaid’s death. Fred’s appearance as the deceased woman on a foggy bridge, combined with Moran’s gunfire, coerced Bale into reenacting her fatal fall. His commitment extends beyond duty, reflecting a genuine belief in the cause shared with the group.