In the Lego instructions for the first generation of Bionicle, there was a bonus section where you could fuse together three different toa and make a 'super-toa' which combined the powers of the toa used. Was there any example of this happening in the movies or the comics, or was this just fluff for the instructions?
This section also existed in the instructions for the matoran as well, and I believe for the Bohrok.