From a series of plastic model kits produced by Imai, called Megaro Zamac. There was never an anime show related to this series, I think Imai simply produced the kits to cash in on the giant robot model craze. This is the title mecha, the Zamac, I stuck fairly closely to the original design but added a lot of extra detail since the models were fairly primitive compared to newer anime mecha kits.
This is an updated version of my original render from 2005.
