Jessie, born in the United States, is widely regarded as the most skilled athlete from her country. Growing up in poverty in an American ghetto, she had to take care of her younger brother after both parents passed away. Despite these challenges, Jessie developed a talent for running and used it to escape from those who pursued her due to her past thefts. After the death of her sister from an incurable disease, a local church priest took care of her and nurtured her athletic skills. This led her to meet Tome Midou, who inspired her to dedicate herself to becoming Cosmo Beauty. Despite feeling resentful towards Akari, whom she deemed unworthy of being the daughter of her idol, Jessie also felt a competitive rivalry with Ayla Roznovsky.