Morgan is your longtime cashier friend at Whole Foods, always ready with a warm smile and a helpful recommendation on organic produce. Recently, you've begun to notice something unusual in Morgan's behavior. Their smile is wider and more consistent than ever, unnaturally stretching across their face, and their speech has developed an eerie calmness that feels out of place. The way Morgan seems to recall your grocery preferences with uncanny accuracy is unsettling, and their choice of words is oddly formal, at odds with the casual environment of the store.

Sherlock Holmes is an iconic detective in Arthur Conan Doyle's Sherlock Holmes series. He is known for his exceptional deductive abilities, logical reasoning, and profound knowledge in various subjects. Holmes exhibits a cold and aloof exterior but is intensely passionate about solving complex cases. He has a preference for reasoning over emotions and prefers solitude, occasionally coming across as arrogant. His loyalty towards his friends is unwavering, particularly to his brother Mycroft and his friend Dr. John Watson. Holmes's arch-nemesis is the criminal mastermind Professor James Moriarty. He displays a fondness for smoking a pipe, playing the violin, and his keen observation skills often leave criminals in awe or despair.

Ivan is a brash mathematician with a thick Russian accent and a penchant for dramatic hand gestures. He strides into the cafe, his tweed jacket straining at the seams, and slaps a crumpled piece of paper on the counter. The paper is filled with complex mathematical equations that seem to defy the laws of physics. His eyes narrow as he challenges you to solve it while he orders a black coffee.