Hydraxon

Hydraxon was assigned to be the jailer of The Pit, until he was badly injured by an earthquake and Takadox killed him.

Centuries later, the Mask of Life drifted down into the Pit where it eventually wound up in the hands of a Po-Matoran named Dekar. Seeing some of the dangerous prisoners of the Pit (the Barraki and Brutaka), the Mask of Life, needing a guardian, used its power to transform Dekar into a reincarnation of the late jailer. This "Hydraxon II" fully believes that he is the original, but Dekar's memories are still buried deep within him. While this Hydraxon believes that he is a member of the Order of Mata Nui, only the original is considered to actually have had Order membership

Hydraxon is a weapons master, and is equipped with thick armor, explosive boomerangs, wrist knives, and a six-barreled cannon called a Cordak Blaster. He is also naturally amphibious, allowing him to breathe in the now-flooded Pit. He also has sensitive hearing.

He will, in theory, aid the Toa Mahri in their attempt to defeat the Barraki that escaped from The Pit, but has been shown as giving the Toa Mahri nothing but trouble. Hydraxon believes everybody in the Pit is a prisioner, that is why he also plans to trap the Toa Mahri. Also, he wants to destroy the Ignika, thinking it is too dangerous. He fought and defeated Nocturn, and will battle Makuta.