um download the scorpion doc.

Right, Shosuro Kamigari, Scorpino Ninja... I have 3 minutes left on my Internet timer so you'll pardon me for not being more detailed than that.

How will multiple identities be handled?

Well here is the magic.

Bah, somebody already took ninja. Never mind, Kakita Haku, iaijutsu duelist of sorts.

Can we take backgrounds like Empress' cousin/brother/sister, etc?

You can marry into the family

Hmm, is the Empress an Asahina, Kakita or Doji? (Not sure of Doji/Daidoji are peoperly members of the clan... maybe I'm remembering wrongly...

I was thinking of having this guy be distantly related to the Empress in some way...

Go ahead and now the imperail families are the Hantei, Seppun, Otomo, and Miya.

Is it acceptable for a Kakita to dye his hair?

Well they die their hair White, or not at all.

Could I get a good family name for Taken before his master got assassinate, seeming as you seem to have a list of them or something?