User blog comment:LewaMataToaOfMischief/Favourite Matoran/@comment-433902-20100126170228

Hm... ... I think I see a connection...
 * Fire: Kapura
 * Stone: Hafu
 * Earth: Taipu
 * Air: I don't know
 * Ice: Kopeke (Or maybe Mazeka)
 * Water:I don't know

If we include Av-Matoran too, it'd be Takua.