I've been working on this off and on for over a year now, and I'm at the point where I'm proud enough to tease you all. I started with an Iron Man 2 line Titanium Man figure, and started replacing the gauntlets and boots with ones from the Neo-Classic Iron Man figure from the same line. I've used tons of epoxy and styrene so far, so this guy is turning out heavy. And yes, the spikes are metal. I clipped bits off of a paper clip and sharpened them up. The hands and weapons will be fully interchangeable, and the cape will be cloth. Update-July 1st: I slacked up a bit in my efforts, but I've finished the head. I had to attach the tusks to proportion them, so I have no idea if it's still cast-able. Input would be appreciated.