Cedra is a Toa of Psionics The image here is her backpack, but it's sideways. Her full picture will be given after Brickfair. Also, as this is a collaboration, this is not the "official" story. That will be given after Brickfair as well.
Cedra was originally on an island with many Matoran, but due to a broken shoulder, she was sent with her friend Rotaki to Karzahni. As Karzahni could not fix her, she was forced to work with his "pets," several fearsome rahi.
She became a participant in an attempt to escape the realm. The plan was to take thirty-seven Matoran, but due to discovery only sixteen got away. They wandered around the main islands of the Matoran Universe, and four of the members died. after the fourth, the leader decided they should head to lands in the south and start their own colony.
They went south, but the islands were too thickly covered with poisonous vegetation. Another one of their ranks died along the way. They finally came across an island that appeared habitable, and went to investigate. They all fell into a pit of energized protodermis, and nine of them, including Cedra, became Toa. The other three vaporized upon touching it, including the leader.
Uncertain of what to do, the Toa decided to try one more island before heading north. The island was inhabited by hundreds of Matoran and eight Turaga. They had eight villages, and each one was being attacked by Rahkshi. The Toa helped drive them off. Cedra now resides with the Ce-Matoran (matoran of psionics) in their village.
Cedra's weapon is a psionic shield.
Different features of the build:
Her backpack. I felt she needed something on her back because the Horika body made it a little too swervy. The backpack, made of a Matoran body and Brutaka's mask, barely hides it.
Her neck was hard to attach to the Hordika body. This picture shows how I did it. I'd also describe the pieces, but I don't know what to name some of them.