Makuta Teridax

Makuta Teridax (known as Makuta or also Teridax) is the major antagonist of the Bionicle series. He was the evil leader of the organization that is called Brotherhood of Makuta, he is the friend and brother of Mata Nui and Lieutenant Makuta Miserix, trustworthy one who jealous of Mata Nui, which led to overthrowing the Great Spirit and governs the Matoran, the people he has promised to protect, he is also known for planning most of the events of the story throughout the series and orchestrating the minutest details in an attempt to govern Matoran Universe.

Personality
Teridax was totally obsessed with absolute power and made every effort to obtain it, he soon became an evil leader, he proved to be a narcissistic tracer and psychopath who was totally willing to commit innumerable acrossities without showing any remorse or empathy for the others whom he regarded as pedestrians and took no effort to discard them when they were no longer useful in his plans. Teridax was also very manipulative, traitorous and deceitful because he simply manipulated other beings to help him in his cause to get what he wanted. And always claiming that his actions were for the good of the universe, which he dismantled when he convinced his colleague Makuta to join him.

At first Teridax seemed to be very polite and charismatic in relation to other being. However, all this was nothing more than a facade, since he hides his personality, he was megalomaniac and very egocentric, cruel and unforgiving to achieves his goals, he treated both allies and enemies as pawns so he could manipulate and discard them whem they lost their usefulness, he too went so far as to betray them and leave them to die instead of helping them. The intellect of Teridax allowed him to study and analyze all possibilities.

The Arrival of the Toa
Takua was a wanderer who managed to find six Toa Stones that were all scattered about, created and hidden when the Tarugas were actually the Toa Metrus. Bringing them all together in the Kini-Nui Temple and he summoned the Toa Mata to deal with the Mata Nui. In the beginning, Teridax tested these beings to make sure that they were all real Toa, including with the help of Ahkmou to spread the epidemic among PO-Matoran. He soon came to combat it personally. He then convinced, he backed off and awakened the Bohrok and the swarms to deal with the Toa. He knew that Bohrok could defeat the Toa, but at least he served as a distraction to keep the heroes busy. After the swarmss failed, there was another that the Bohrok-Kal elite could be a threat to the Toa. However, the Toa prevailed in the end against the Bohrok, turning into the Toa Nuve its most powerful evolution until then. Mask of Light