carbon has often been referred to as the "king of the elements". -Wikipedia
This moc is basically a representation of a robot made up of mostly carbon components; including diamonds - as such this robot deserves a top hat for probably being the most expensive thing ever built (that is, if it were real) although who put it there remains a mystery to this day.
The whole thing was pretty much based on this part:
But there was also some nice usage of the minecraft enderman torso/legs for the weapon. And a system skull piece up top.
This was my entry to the prelims of the biocup prelims, I have made it to round one also and built an entry for that so check it out here ( http://www.moc-pages.com/moc.php/448032 )