When Mata Nui reversed the Mutagen affecting the Barraki (and Others), did the Matoran of Mahri Nui revert to their Voya Nui forms? After all, it was the Pit Mutagen that made them look the way they do.
Yes, they did
IIRC you once said Mata Nui didn’t reverse them because the mutagens of the pit made their life better by modifying Karzahni’s alterations…
Off course you confirmed that he made Sarda and Idris amphibious as well.