The Kayas is a AI created by the skakdi Dr. Galas durning the war against the artist and his army of mutated half rahi beasts. When the war was over Kayas broke free and started a new war against all life. It uses units called T.O.A units (Tactical Offensive Animatronics) to fight the war and the most feared one is the T.O.A Kayas (my selfmoc) who is built to hunt down specific targets who is a threat to Kayas.
It have four arms and his most used weapons are it's two swords and it's two scythes however it also have allot of hidden weapons like missiles (the spears) on his back and smoke grenade launchers (the coffee cups) on his shoulders.
As power source it uses four relics called the four stones of sin (the studs on it's wrists) and they get power by taking it form the surroundings and therefor it often pick up mask and nearly dead body's to drain them of energy. It also have a back up fusion reactor in it's back and in case of emergency it can self destroy itself by opening up it's back and turn the reactor to a nuclear bomb.