Twisted, weak, malformed, unnatural. These words, and more, perfectly described what resulted from Karzahni’s every attempt to repair the damaged Matoran sent to him. To compensate for his shortcomings, he equipped the Matoran he shoddily rebuilt with weapons. This allowed them to defend themselves, even in their weakened state.
Velika’s Power Carvers were two of those weapons. Despite his abominable state, these weapons proved to be quite the boon. They allowed the inventive Matoran to carve into most solid objects, giving him the ability to break open locks or harvest any materials he needed for one of his crafty new inventions.