This is not an official term.
Notes
This Av-Matoran was a builder of canisters. When it was time for Tren Krom's duties of maintaining the Matoran universe to come to an end, this Matoran went to Tren Krom to inform him. His sanity did not survive his encounter with Tren Krom.1
The Matoran encountered by Jaller's group in Karzahni was a Matoran of Light.2
The Matoran of Light in Karzahni wasn't the standard gold and white.3