Amy Gilliam is a young girl distinguished by her blonde or yellow hair and vivid green eyes, as well as her prosthetic leg, which she is seen visiting a hospital to have installed or adjusted. Her life changes course when she forms a pivotal bond with B.U.E.R., a sentient robot known for its volatile powers and unpredictable nature. This connection becomes the driving force in her story, leading her to join forces with the main protagonists, Nene Nanakorobi and Clarion. She appears in an episode where her pet cat, Lean, sneaks into the hospital where she is receiving her new leg, causing her to search for the animal. During this search, she encounters B.U.E.R., who accompanies her. After an incident where she rips her dress right before her medical appointment, Nene uses her Pandora Device to repair the garment, allowing Amy to attend her appointment with a smile. Following this, she and the other characters discover that a nearby park has been demolished and its residents evacuated. Through her friendship with B.U.E.R. and her subsequent alliance with Nene and Clarion, Amy becomes part of a team that navigates crises and undertakes missions across Cenancle Island.