UPDATE
I thought I would enter the wars mainly for fun , since I’m fairly new to the world of CG.
So any adivice is hugely welcome.
I am going have lots of Images , I will draw very few due to the fact I can’t draw.
He is a Beast created by an Powerful mage he served him for hundreds of years although chained majority of the time he grew over time to like he creator as a father figure, until one night the mage was killed by these machines , Bork broke out of his chains (his artifacts!) and killed the of the assalaints he knows whoever was behind the killing was behind the metal creatures appearing.
Class: Warlord
type: Darkness/Void
Artifact : Chains, with sharp posts attached.
He is in lamens terms going to look like a beefed up Dark yeti example:

DWIII - 3D - Dylock91 - Bork
I think that the concept has a lot of potential. Please tae no offence, but I think that he is what you said he was–a beefed up yetti. Though I’m in no place to say this because I have very little experience, I think that you should give him some style. You know, throw some ethnic looking tattoos on him, put a whole kingdom on his back, etc. Try a new colorway; you could really make him even more dark looking than he is. Would like to see more.
I agree with Stacy to some extent atleast. Anyways i think he needs some sort of gear, clothing, armor, thingies, do-dads, and what not. Right now he is very empty. I think you get some nice gear for this guy he could be pretty cool character.
Some updates ;
I agree with both of you that image was just the only muscular yeti image I could find , thanks for the idea of the Tats really liking that but I’m not sure how to encorparte this with the fur(possibly engravings on armour). Here are some Ideas I have been using to base him on this is not anywhere near the final model just some experients concepts if you will 
Here is an Idea for porportion and size using some Imported Zbrush tools;

A early concept of armour using some primitives any opinion? - any preference over having straps or chain linking the front and back?

Fur color and styling:

Tatoo/engraving Ideas :

My concept for his artifact is shackles attached to some form of magical post/spike , but I am having trouble thinking of some designs for the post/spike any Ideas , or Images you may of seen?
Any Help very much welcome