Grey Golem (Fun)

Appearance
Well, imagine a soviet style building block. Then use transformer logic to make it into a humanoid at about 100 metres. Give it a one-handed hammer for the left hand and an energy cannon for the right. There you go.

Information
One of the Blood of the Proletariats super constructs, following their war doctrine of 'Strike weakened points with overwhelming force.' Build 1973 in modern Kazakhstan.

Reference
Fought in Chapter 346 "A more welcome kind of war"