Tythe

Tyhte was one of the seven original members of the short-lived organization The Gauntlet. He eventually left The Gauntlet for many reasons, but the most noteable was for the Artifact known as the Seismic Sword. He Traveled to Mata Nui where it was said to rest and he gained control of it secretly. He believed that he couls become a Dark Hunter with this new power, but before long the remaining members of the Gauntlet came to destroy him. He was succesful in defeating them a few times, but when the Anti Toa Garthar'e killed half his team to rip the sword from his hands, he knew that he was no match and yielded. He begged for his life, and Garthar'e let him live on the one condition that he helped him bring down the Toa Tangura. He accepted, and together they found the Toa and battled them for three days before Tyhte sacrificed himself so that Garthar'e could destroy their leader Taharus. It worked, and Garthar'e killed the rest of the Toa team until only one survived, and he agreed with him that he would spare his life if he transformed into a Rahi beast in exchange for Tyhte's resurrection. The power transaction happened, Tyhte was restored and the toa was transformed into a silver beast. Garthar'e betrayed his allies once again and destroyed them both, finishing his mission and beheading the beast and mounting it's skull to his right shoulder.

The Seismic Sword
The Seismic Sword was designed to be wielded by a Earth being, and Tyhte took advantage of that and used it's power to wreck the island and battle the Gauntlet. It has since been thrown into the sea where it remains, yet to be disturbed.