I got a headless Rhino in a lot of fodder figures awhile back and thought I'd never do anything with it, then I got an awesome new sculpting putty called ProCreate and decided to sculpt him a new head using a grey Hulk head. I then attached the Beetle's shoulder pads when I realized how closely they resembled Rhino's bands, I really just did this one to hone my sculpting skills, but it turned out better than I had hoped.
Re-read the description and realized something funny. You said you used ProCreate to sculpt the Rhino head and that just reminded me, back when I was in Navy EOD we used an explosive called Procrete. Thought that was a funny coinkidink.
The figures contained in the Custom Showcase are not for sale by Figure Realm, and the creators of the customs are no way affiliated with Figure Realm. The Custom Showcase is purely for entertainment purposes and only provides a means for the creators to show off their work and trade ideas. Figure Realm does not make or sell customs.