The original legend of Bionicle
Before we start digging for clues about the existence of the Great Beings within MNOG I want to introduce you to the deepest and most obscure pieces of lore, the kind that will completely flip your perception of what Bionicle is and will explain why I love 2001-2003 so much; I'll be referring in this to the investigative work by Maku from BZP, I really recommend you to read the entire text. I, personally, downloaded it, printed it out, bound it in Technic pieces and now pray to it every night in front of a shrine dedicated to 2001-2003.