Ultimatrum is a custom BIONICLE set, created by 1999bug.
Ultimatrum or Matrix is a Dark Hunter and was once Toa of water. Much like Brutaka, Ultimatrum is a traitor to the toa. His Toa and Matoran name was Matrix, but when he gained his huge size, he changed it to Ultimatrum, because he thought of himself as ultimate.
During a battle with Sharian, Matrix was knocked off of his feet and fell into a pond of Energized Protodermis. Sharian assumed he was dead and left. Instead of it killing him, it mutated him into a hulking beast. With his new strength, he sought more powerful opponents. After killing many foes, "the Shadowed One" recruited him as a dark hunter. Now he hunts opponents like Rahkshi, Skakdi and large Rahi.
The Protodermis didn't just make him larger and stronger, it also made him go insane.
- The first part of Ultimatrum to be developed were his two arms.
- His weapon was originally some sort of staff or spear, which was scrapped and replaced by his large blade.
- Ultimatrum was going to use a helmet like the one which was contained in 7160 Drop Ship, but due to the light patches of blue, it was scrapped and was replaced by a diving helmet sort of mask.
- Originally, Ultimatrum was going to stay a Toa.
- At first, Ultimatrum wasn't insane, but the idea was added later along.
- He wears the fictional Kanohi Quaza.
- The Kanohi Quaza was created before I knew hardly anything about Hero Factory.