This android was made by Great Beings as a prototype for the peacekeepers later altered, and renamed to toa.
He was made out of remaining scrap lefter after creating skeleton of humanoid spaceship occupied by Mata Nui, but later Great Beings scrapped idea and disassembled the android.
After their GSR was sent from Spherus Magna to outer space, they realised they left remains of Salvage on the ship, but it was too late.
Several days have passed after crash... Salvage rebuild himself my destroying innocent matoran and their machines... his OS was corrupted by evil.
obligatory back shot becouse beloved nyran woukd want it
Also, the hook-arm has working gears!
Also... i challange anyone who will read this topic to take 1 and half of hand of bionicle pieces and make character out of it! (Basicaly how this thing came to life)