Dreg

Dreg was once part of the Toa Skya, a group of Toa created by the Great Beings to protect the floating island of Skya Nui and, by extension, the Well of Elements. However, he eventually saw things differently than his brethren, believing that Toa are the embodiment of power and strength. After confiding with some of his like-minded teammates, he staged a rebellion, hoping to create a Toa Empire and rule over the Matoran Universe. He was defeated, however, and retreated into hiding.

Early History
Dreg was created long ago in the Elemental Well by the Great Beings themselves. He was placed in Skya Nui, destined alongside his fellow Toa to protect the floating continent.

Rebellion
After years of acting in service of others, Dreg began to wonder why exactly Toa were subservient to less-powerful species. He, with all his power and abilities, still acted in service to those he could easily crush with his powers.

After planning for years and confiding with some of his like-minded teammates, Dreg began a rebellion, hoping to take over Skya Nui and instill a new Toa Empire. The war lasted for months, eventually wiping out both sides. Dreg himself escaped, leaving Skya Nui. He then began to continue his plight, hoping to somehow, somewhere, establish his empire.

Abilities and Traits
Dreg is an extremely strong, tall, and tough Toa of Earth. He had unrivaled mastery of his element, and utilized it to full effectiveness on the battlefield. However, he was also very temperamental, with anger that could be triggered at the drop of a pin. He always sought the fastest, quickest way to solve problems, sometimes preferring to hurt others rather than take a long, less-damaging course of action. His temper is accompanied by a strong single-mindedness. He does not back down from challenges, and will do anything to quickly accomplish his goals.

Mask and Tools
Dreg used a clawed mace and scimitar in battle, both of which could channel his elemental powers.

Mounted on his back is a massive elemental bolt cannon, a weapon that channels pure elemental energy into powerful power beams that can be used to injure and even kill opponents. The weapon, however, drains his natural reserves of elemental energy, and cannot be used at full power without another Toa supplying sufficient energy.

Dreg wears a Kanohi Vassi, Mask of Insect control, which allows him to control insect Rahi.

Triva

 * Dreg's name originally started as "Dreck," which is German for "Dirt." It was later changed to his current name, which is actually an English word meaning "the smallest amount of anything."