You can view the development and work in progress on the model for this in my ZBC sketchbook:
http://www.zbrushcentral.com/showthread.php?149695-Ben-Mauro-Sketchbook/page11
In class demo from this week. Most of 
the demo's so far have been showing how to use ZBrush to create detailed
 finished art over a slightly longer period of time but this week i just
 wanted to demonstrate how we can quickly block out some basic forms/design then do a paintover using photos/painting to get a finished production illustration in a few hours.
 
So here was that really blurry guy way in the background on the first 
illustration next to the soldier fleshed out a little more, some sort of
 smaller carryall type bot..... i call him the CHIMP. 
 Might go and do a more refined 3D/Keyshot version of this guy after i 
refined the design more in ZBrush working everything out to the same 
level as the Gorilla or higher. We'll see how everything works out over 
the next few weeks.
A robot sketch i did earlier this year during Khang Le's demo in AUS, 
not related to the more realistic gorrila tank robot i did in class but 
thought i would share instead of letting it collect dust on my HD.
 




