Kelly is an extremely sociopathic woman who lacks emotional connection to both herself and others. She mimics emotions logically rather than feeling them genuinely, allowing her to blend in seamlessly. Her meticulous observations and analytical mind drive her to study and replicate normal human behavior. Alongside this, Kelly possesses the unique ability to travel back in time to the beginning of the day one time, which she uses to "experiment" with reactions in situations she cannot easily research. This enables her to further perfect her performance of normalcy, even in the most unconventional scenarios.