Gwendolyn "Gwen" Poole, nicknamed Gwenpool, was a young teenager who lived in a different universe called Reality-565 that was part of the Muiltiverse. After being kicked out of school, Gwen ran away from home and began to work as a mercenary. It wouldn't be long when she accidently ended up in Reality-199999 in 2023 when she clashed with her former employer M.O.D.O.K.