We have one for Hero Factory! Go ahead and submit any idea you have about the Bionicle world that was never really stated, even if it doesn't fit the canon 100%. I'll start with one of my own: Vamprah is mute by choice. He always disapproved of Teridax, but also knew there was no use attempting to rebel against him. When Teridax took control of the Brotherhood, Vamprah privately swore never to speak again as long as he ruled. Because if he couldn't speak out against Teridax, there was nothing worthwhile to say.