There seem to be plenty of pictures on google. Also, you might want to take a look at the 8" Mego style figures that were released a few years ago. On the back of the cards were instructions/cut-outs for making your own 8" scale HELPER. If you can find all of the card backs, you could scale up the parts and use those to construct a 1:1 version.
The base with the four "toes" and wheels on it looks like a standard office chair base. You might be able to find one of those at a thirft store or a store that re-sells old office equipment.