User blog comment:Zamorbomb9000/More TBW Community Fanon Kanohi!/@comment-1949880-20100530220432

Oh, and about the immorality of masks? The Mask of Aging was considered an immoral mask, but the only known wearer was a Matoran in Karzhani. So, it can become an immoral mask two ways:

1. A Makuta associated with the Makuta Rebellion wears it. (Shelek, etc.)

2. It has a power Toa simply deem immoral and evil. (Mask of Aging, Tryna, etc.)