Elizabeth Warren is an English transfer student attending Shiratama Middle School, where she joins the soft tennis club. She previously met the club's coach, Hiroshi Mishimagi, several years before transferring and developed romantic feelings for him, sparking occasional rivalry with teammate Kotone Sawanatsu for his attention.

As a non-native Japanese speaker, her vocabulary limitations lead her to mix English words into conversations. She shares a quiet disposition and maintains a friendship with fellow club member Kurusu Fuyukawa.

Physically, she possesses waist-length blonde hair and blue eyes. Her British origin is reflected in her character design and background.