He's back! Part 2 of my Arnold project showcases the body if you are interested in seeing the showcase of the face you can check it out on my Artstation profile.
This is Arnold as a bodybuilder because the T-800 is either fully clothed or fully nude (which is unhelpful). I'm not feeling a pressure to sculpt a particular version of Arnold. I think Arnolds back and calves pop better with top down lighting both in real life and on my model so I used both top down lighting and more standard lighting. At the same time I don't have any closeup ref of Arnolds back and as far as I know none exists so I didn't use it for the close ups (the still photos of his back in this position are probably mostly lit top down the video footage which includes close ups more like the other lighting setup).
I created the body and head geometry from scratch myself in ZBrush, I began by making abase mesh then later decided to make Arnold. The body albedo texture base came from a scan store model "Male 04 Anim ready" I transferred it across to my mesh using ZWrap I did not use the geo on it for anything I didn't use any of the other maps or details which I assumed to be derived from the albedo anyway and for the hands I was able to modify the albedo into a height map that I used to detail the hands I sculpted so it was was not a hassle, but I didn't really use it much elsewhere with the notable exception of the traps close to the spine where I wanted to match the pores from the Albedo. I used some XYZ and I used various alphas from substance I spent alot of time making a network of layers for the skin and it's something I would like to reuse in other projects and it has some adjustability built into it with the layers. Might add more breakdowns and stuff later for now it's just the ZBrush. The roughness and spec are derived from the disp I made and the coat is painted from scratch.