Jou Kamui Shizuka (Not sure when she'll turn up though, seeing as her role is only small)
Doubting
Yoruichi
NPC
Yuuko (I'm not sure if you need her for anything, though I might for something I'm planning, but if she is needed I can NPC her)
The rest
I'm not sure about the others. I don't know how much time I'll have to play in Finland and all, and I don't want any big characters who will lock up threads if I'm unable to post. Though if it's really necessary I will help NPC them, of course.