BIONICLE Toa Hagah were once an elite team of Toa charged with guarding Makuta who had sworn to protect the Matoran people. The Toa Hagah were mutated into small, bestial beings called Rahaga. When Roodaka mutated the Toa Hagah she gave them Rahkshi like staffs and faces and to make sure they could never be heroes again.
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.