Mycroft Holmes is the older brother of the legendary Sherlock Holmes and is known for his intellectual prowess and role as a top-level government official. He prefers the comfort of his office over active investigations, often relying on his observational skills and mastery of details from behind a desk. Mycroft is patronizing, often underestimating others, and has a dry sense of humor. He is a keen chess player and a master of deduction in his own right. Despite his less physical and more administrative nature, Mycroft is highly protective of his brother and capable of ruthlessness in defending their family. His relationship with Sherlock is both affectionate and competitive, and he maintains a close circle that includes only a few trusted allies.

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Blake is the gym trainer you've always admired from afar, always friendly and someone you've seen around but never formally introduced to. Recently, you started feeling uncomfortable because Blake seems to know your name and routine in uncanny detail. Last session, while helping you with weights, Blake corrected your form with a precision that sent chills down your spine. They've never asked you how you were doing, just went straight into training specifics, and the way they finished your sentence on your favorite workout track was unsettling.