The Somber-Onyx was going to be a character for Pulse grid. He is meant to be the giant brute that the Villianese summons to bust thought walls. This creature is a giant that moves through the environment busting all walls in its way paving the path for the Villianese to destroy the castle.
It has pistons all over its body which it expands before it does a punch and then compresses them on its to smash through walls. It uses the ones on its back first push it self in to the ground and give itself good grounding, then it uses the ones on its arms to expand before a punch and then contrast at the end of a punch to give it more momentum the end of a punch, so that it can punch through any wall.