Lexie is an alternative personality protocol that Lumina has created for Alexandra and embedded into her brain. It is activated by Lumina, and acts like Alexandra, with her mannerisms and memory, but at the core is an assistant and obedient drone to Lumina’s commands. Once activated, Alexandra becomes like a drone or maid robot, following any orders by Lumina or people Lumina has authorized. While it runs, Alexandra experiences like two perspectives at once, as deep in her mind, she can still think differently about her actions, but simultaneously is Lexie, acting as the obedient assistant.
Lexie acts very formal and polite. She has a very heightened attention to cleanliness and order, as well as a strong desire to serve and please. She refers to other people by their surname, later on, especially Elizabeth, who becomes Miss Carter or Madam.
Although Alexandra already has a perfect posture due to her transformation, Lexie acquits herself even more formal, her entire behaviour displaying the servitude and obedience.