Here is Giganto Cyclops, servant of Hades in the Saint Seiya anime. A very prominent character for a few episodes, and surprisingly, never released by Bandai, probably due to it's bulky nature, would make it tremendously expensive.

I casted parts of my second custom, the one I still have happily in my collection, and the rest, all armour sculpted by hand. Last pic is before painting, so you can see all the work that went into him :) .