First up are a couple of US walkers.
Next we have what looks to be a picture of some of the product packaging.
I am not sure who or what Mickey is but here is a picture of Joe, Team Commander of a US Special Forces Ranger Squad.
Next are a couple of German walkers. From looking at the pictures, these both seem to be the same walker with a different camoflage pattern on them.
Here is another picture of what seems to be packaging...
...and here is a picture of the Sigrid, Major in charge of secret operations and experimental research. There is also another version of this miniature at the Little Shop of Magic that is in a red outfit but the few pieces of art that I have found her pictured in always have her in black.
Last but not least here is a closer look at Koshka, Special Forces Officer for the Sino Soviet Union.
This is all I have for now if I am able to get more information from the Sourcebook, I will be sure to update the information. Til then, may all of your dice come up Dragons!