Elizabeth Greenhough-Smith, also known by the nickname Ellie, is a supporting character in the series. She is fifteen years old and works as a collector, which involves locating and retrieving illegal energy coils within the world of the story. Her role, however, is more complex than it initially appears, as she is secretly the assistant and daughter of Loser, a more prominent and enigmatic figure in the narrative.

Physically, Elizabeth is depicted as a young girl with long blonde hair that reaches past her hips and distinctive red eyes. Her visual design is notable for incorporating elements often associated with gothic lolita fashion, including frills, detached sleeves, a hairband, and earrings. Her appearance also features decorative wings and a tail, which align with her specialized skillset.

Rather than engaging in direct combat, Elizabeth demonstrates a particular talent for remote combat and surveillance. She is highly proficient in controlling a swarm of drones, which are specifically designed to resemble small animals such as pigeons and bats. These mechanical creatures serve as her primary tools for gathering information and executing strategic maneuvers, making her an effective support agent.

Regarding her personal motivations and development, the available information is limited. Her primary narrative function is tied to her secret identity as Loser's daughter and her activities as a collector. She does not serve as the central protagonist but operates in a supporting capacity, often facilitating the plans of those she is aligned with. Her relationships are defined largely by this hidden allegiance, with her connection to Loser representing the key aspect of her background and her driving force within the plot. There is no detailed information regarding her personality traits, emotional arc, or any significant change she undergoes throughout the course of the story.