Dagger (FFIX)--Coz she's pretty. Hehe! I dunno. SImply because I like her. And coz she's pretty.
Shiva (FFVIII, FFIX, FFX)--She's a character too, right? Of course she is. I like ice and I like her design. Enough said.
KOS-MOS (Xenosaga)--She's designed as a girl and kicks butt in the game (at least in the first episode)! Hehehe!
chaos (Xenosaga)--Because I just love the mysterious ones. Besides, he has white hair!