Hydraxon

"Who I am is my business. Staying out of my way is yours" -Hydraxon

Hydraxon was assigned to be the jailer of The Pit, until he was badly injured by an earthquake, caused by the Great Cataclysm, and Takadox killed him. Before he became the jailer, he was training combat skills for the Toa Mata.

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

After being "revived", Hydraxon set out to re-capture all of the escaped prisoners. Because of this, he though everyone in the Pit was a prisoner, and so captured Toa Matoro. After inprisoning him under the watch of Maxilos (who, unknown to Hydraxon, was possessed by the evil Makuta) and Spinax, he departed to round up the other prisoners.

Soon after, he fought Nocturn (who was on his way to find Ehlek, and ask him about his new "death touch", granted to him by the MoLi). After defeating him, Hydraxon realized the Mask of Life was cracked and on the way to self-destruction. Deciding the mask was too dangerous to be left in the Pit (and that the mask was damaged anyway), Hydraxon took aim with his Cordak Blaster and fired. The mask was not desroyed but soon after that Mata Nui died.

Hydraxon will fight the Makuta of Metru Nui later this year.