Elle Driver (portrayed by Daryl Hannah), A.K.A. California Mountain Snake, is a villainess from Kill Bill. She is another swordswoman loyal to Bill. She's also a member of Bill's elite group of assassins known as the Deadly Viper Assassination Squad. Unlike The Bride's relationship with O-Ren and Vernita, where there seemed to be a genuine friendship and professional respect, Elle and the Bride despise each other with a passion. One of the reasons for that hate is that the Bride is Bill's mistress, and Elle was jealous of her for being loved by Bill (it was implied that Elle also had some kind of sexual relations with Bill at a different time). Nonetheless, they do seem to treat each other with a grudging respect. Elle even describes The Bride as "the greatest warrior [she] had ever met" a