User blog comment:Vorred/Patriots Launch! - 1 Year Anniversary - Update June '13/@comment-3965075-20130629211624

Well, as Biomechincal entities, Toa and other species can rebuild themselves. The Matoran on Mata-Nui did it,  made themselves larger and stronger. Karzahni has the knowledge, but lacks the skills (as the Voya-Nui Matoran are proof of that). As for the change in armor, you did mention that these Toa would be in a Prologue. These Toa might be what my guesses looked like before Uprising, seeing as that you're using the themes and styles of 2001-2005.