Elizabeth Butler, often called Beth, serves as a skilled operator in the defense forces stationed at the UN Kurobe Laboratory control room. She is an adult woman with a caring nature and a big heart, which defines her interactions with her colleagues and the broader team. Her appearance is characterized by blonde, chest-length hair and blue eyes. Within the high-pressure environment of the laboratory, Beth is a good friend to her fellow operator Rita Ferreira Mendes, suggesting a supportive and collaborative presence among the support staff. While her primary function involves managing communications and data from the control room, specific details regarding her personal background, deeper motivations, character development over the course of the series, or any unique combat or technical abilities beyond her role as an operator are not detailed. Likewise, her specific role in the major story events remains largely unmentioned in the available information.