I hope I can get this straight. Before we start, I would like to note that Rai is in fact my Primary Self-MOC. However, Ekorak remains to be my Primary as well. How, you might ask? Well…
Rai’s story isn’t Bionicle related at all.
I can hear you gasping in disbelief. Don’t worry, I’m not giving up on Bionicle or anything, it’s just that I wanted to have a story to narrate using my Bionicle-made characters, but I actually would be the creator of the characters and the universe, not just using them. Basically so if LEGO cracked down on fan made projects and stories, I would still have the right to continue my story online. When I mean putting it online, I am referring to a stopmotion series I am preparing to start, which will be titled City of the Fallen.
Let’s get to the MOC, shall we?
Well, here he is. I wanted a simple, yet flexible and study MOC, in colors I could use lots of (for later in the story >:D). And yes, sorry all MOCpagers, Rahkshi head. I have my reasons, so shaddup.
Generic standing pose. Just to clear this up, he is a cyborg, and all silver on him except for his head is metal. The red spots are patches of fabric.
A slightly more dynamic pose, showing his fists closed. Just to note, I think I am the first person to use this particular finger design, although I’m not sure, and I’m too lazy to look across the winds of the internet to find out.
Some sort of action/landing pose. By the way, in the universe in which the story will take place, freaking everything is overpowered. Rai himself can lift approximately 50 tons without amplification, 200 tons with. He can also run at the speed of a train without amplification, at the speed of a bullet with. He has other abilities, but I can’t say anything about those without giving out spoilers 
EDIT: I have decided to nerf his un-amplified abilities, making so he can only lift about the weight of a car, and…well he can still run the speed of a train, but his amplified speed is only about the speed of a jet.
Preparing to deliver the final blow, perhaps? The piece of junk that he is about to kill is called, quite appropriately, a Scrap Zombie. More on those in a minute 
A better look at his first weapon, his wrist blade. This will also be a connector for a weapon I chose not to reveal in this post, because he will not use it until later in the series.
Just for those that are curious as to how it is attached. Simple design, but hey, it works.
But now for the gem of his Tier 1 weaponry. This is called a VM3 Blade, which stands for Volt Magnetic (version) 3 Blade. The actual blade has a magnetic field around it, allowing it to push though any substance in the known universe, unless it is protected by a magnetic field of its own.
Surrounded by Scrap Zombies, oh noez!
…um…
…oh…well that was easy.
Oh yeah he’s also flexible like nothing I’ve ever built before. Two waist joints and two neck joints. Also, if anyone EVER asks for a how-to on him, I will possibly comply due to his simplicity, but you’d better be ready to blow through nine balljoints on one MOC.
Final shot with him standing atop the un-animated Scrap Zombies.
Well, that’s all. Hope you enjoyed to MOC, even if it’s not my best work
See ya!