The one with pigtails is Jeanette from Vampire the Masquerade: Bloodlines. The Purple Haired One is Motoko from Ghost in The Shell Stand Alone Complex. And the one in the purple suit is obviously Tali'Zora vas Normandy.
pigtails makes me think "Sucker Punch", I know Ghost in a Shell is present, Blood Rayne?, the 2nd one in appears to be from Star Wars the Clone Wars but I'm not really sure I can place the 3rd one anywhere.
the second one on the left side isn't an android, it actually an alian called Tali.. her race wears those suits because their immune systems or some shit like that.. other then that.. i know the last one is from ghost in a shell ^.^
Tali from MassEffect (1 &2) is the 2nd one. mmm...I try to guess the 3rd one: Lady Aribeth from Neverwinter Nights? The 4th is the tierfling (it's correct?) from "Planescape: Torment"... Annah if I remember correctly 5th: the malkavian vampire from "Bloodlines". 7th: Mokoto from "Ghost in the shell". I love your idea!!