The Fox Force Five pilot was a corny knock off of Charlies Angels (the tv show, obviously) but with four women instead of three - of course, Quentin is too clever to do have a completely identical rip off of another idea in his dialogue, so he meshed it all with some other ideas/concepts.
Thurman - Kung Fu expert
Fox - The Knife Expert
Lui - she’s more of a weapon’s expert based on the anime flashback, but being in any form of the mob, Yakuza or Mafia, she prolly knows a thing or two about explosives.
Hannah - the one with the specialty for sex
Madsen - the Bosley like, go between for the DIVAs and Bill
Bill - Charlie - the enigmatic boss man whom we never see.
Obviously, it was never QT’s intention to even imitate something as ultra crappy as the Charlie’s Angels movies, but it wouldn’t surprise me if a darker, twisted, bloodier version of the old seventies show was in the back of his mind when he began to develop the idea.