Organization XIII Sims and Hair By Kitty_Paine

The hairs can be found in this thread at the forums of Mod The Sims.

You can download the hairs at Megaupload.
Vexen
Axel
Zexion
Marluxia

The Sims can be downloaded at the Sims 3 Exchange.
Vexen
Axel
Zexion
Marluxia