The Toa Mata are the main heroes of LEGO BIONICLE and comprised of Tahu, Gali, Lewa, Pohatu, Onua, and Kopaka. They were the first Toa and where originally just known as Toa. When they were submersed in energized protodermis and came out with enhanced powers and abilities, Toa Tahu renamed them the Toa Nuva. Their powers included strong control over their element, personal tools used mainly for directing their elemental power, and a Kanohi Mask granting an additional ability. On Mata Nui the Toa each collected additional Kanohi Masks that allowed them to use the powers that their brother Toa have.
The BIONICLE theme is series of sets based on modified TECHNIC pieces and ball-and-socket joints to create larger figures. Bionicles coincided with a series of comic books and graphic novels released during the set's run from 2001 to 2016. The theme was introduced in 2001 and originally discontinued in 2010, being succeeded by Hero Factory but additional sets were also released up until 2016 after it's break in 2010 to 2014. BIONICLE sets were tied together by an elaborate original storyline within the comic books and other multimedia that centered around bio-mechanical characters which are generally large, powerful beings that usually serve for good. The name BIONICLE is short for BIOlogical ChroNICLE.