Jill Valentine is one of the original protagonists of the Resident Evil series and remains one of its most iconic characters. She first appeared in Resident Evil (1996) as a member of the Special Tactics and Rescue Service (S.T.A.R.S.) Alpha Team. She is a skilled operative with extensive training in law enforcement and counter-terrorism. Her background as an elite soldier and her resilience against bioterrorism have made her a central figure in the franchise.

Born in 1974, Jill joined the U.S. Army at a young age, where she excelled and was recruited into the elite Delta Force program—making her one of the few women to receive such training. Her expertise in bomb disposal and combat made her an invaluable asset, leading to her recruitment into S.T.A.R.S. in Raccoon City. Jill is one of the first characters to uncover the horrors of the Umbrella Corporation and has been a consistent figure in the fight against bioterrorism.