According to a pen to be released by NGNL official, http://ngnl.jp/images/pic-goods-ballpoint_pen.png , Name of characters would be Sora, Shiro, Steph(Stephanie), Jibril, Chlammy, Fiel, Izuna. Both Feel and Fiel will be coexust for a while. And while it use the name Teto, we'd still stick to use Tet for now. see Terminology List that's currently building bby our wiki for more info.