Doesn't Makuta look alot like an Exo-Toa,why could this be?
My gues is that he was very weakened after his first battle with the Toa,and that he uses an Exo-Toa as a host after the Bahrag were defeated,thats were the Exo-Toa went to.

Post commments on my theory here

Well I don't really agree becuase the exo-toas are used in the 2003 storyline. (Greg F told us) But I do agree that makuta has something to do with the exo toa, because they look so similar. I think that Makuta actually made the exo toa, or since he's toa sized maybe originally made it for himself.

Taiki,why would he then made 6 instead of one.
It could also be that he helped the Toa a bit because he wanted to defeat the Bahrag,and let the Toa do it.
And then he took them over.

Mata nui i think was created for before humans were made.
I think Mata nui created everything with his blood (Protodermis).
But there is a chance makuta made the exo-toa but he made a terrible mistake.
He made the exos when he came to full power so he could get rid of the bahrag so after the bohrok kal and Rahkshi he could get to full power.
But what if the toa use the exos against makuta?