I've got a list: *Definitely Takua, for sure. If there was ever a single main character of the 2001-2003 Story Arc, it would have to be Takua. *The Turaga and other key Matoran, such as: Jaller, Kapura, Nuhrii / Matoro, Kopeke, Ehrye / Hahli, Macku, Kotu, Vhisola / Hewkii, Hafu, Ahkmou / Nuparu, Onepu, Taipu / Kongu, Tamaru, and Orkahm. *The classic Rahi, the Bohrok, and the Rahkshi. *Skakdi, Visorak, Xians, et cetera. *Makuta, and the Brotherhood. *Order of Mata Nui. *NOT THE GIANT ROBOT. That about sum it up?