One of the funnest things about Grody Shogun's Monster line is the multiple body parts. That includes 4 bodies, 6 arms (3 left + 3 right) + 6 heads. As I've reported before, the figures are all based on two monsters: vampires and Frankenstein. In fact, all six heads were made from just two sculpts. Luke made several wax protos of each head, and from those, he sculpted the variants. So in addition to smooth heads, you've got others that are angular, coarse, etc.
Luke keeps the sculpts around in case he wants to create more mayhem down the line. The above pic shows the two original Monster head sculpts. Bit of Grody Shogun lore.