Tren Krom (Being)

"Now tell Tren Krom of your power."

In The Mutran Chronicles, Part 4, Mutran mentioned heading south of Metru Nui to meet with a legend by the name of "Tren Krom".

Later, in Federation of Fear, Brutaka's team landed on its island. Lariska was the first to detect it, hearing a wet, breathing sound, and something slithering. It then caused impenetrable walls of stone to spring up, and attacked Brutaka with a tentacle, dragging him into its cave.

Tren Krom was described as having an appearance so horrible that Brutaka had to struggle to maintain his sanity.

A description of Tren Krom according to Makuta Mutran:
"In the interests of writing a complete record, I should include every detail of my time there. In the interests of the sanity anyone reading this, I will not. Even when I look back now, I remember only a scarlet mass, a face that was not a face, tentacles lined with tiny, sharpened hooks, eyes that were little more than holes in a gelatinous skull, and that voice... oh, that voice made Makuta Teridax sound lilting and sweet."