Trinexx

Trinexx was an ancient being that came to be worshipped by the Lizalfos as their Deity of Natural Disasters.

Physical Characteristics
Trinexx is a giant, turtle-like creature with a stonelike shell, with two additional heads protruding from its shell on either side.

Ancient Age
Not much is known about Trinexx, but it possibly lived in Death Mountain or Faron Woods during the Ancient Age. It is known that it came into contact with the Lizalfos at some point during this era, who were awed by Trinexx and came to worship it as a God.

Rise of Ganon
As of 1 BG, Trinexx has not been seen in ages - it's most likely that it was dead or long gone.

Trivia
Trinexx was originally conceived as a Wandering boss monster similar to Moldarach or King Dodongo, but was eventually cut from the game.