I stumbled upon Tone Box last night and it took me a little while to realize that their pedals are actually skull shaped with the leds in the eyes of the skull. They have one model called Skull Crusher but it is available in Stainless Steel, Aged, Gun Metal or Ancient. I thought that would be a gimmick until I watched this demo by George Lynch. The little things you see on top of the amp are the pedals. The Skull Crusher is more versatile than it looks and offers four different voicings. It can go from slightly distorted to blistering metal, check this out:

And here is another demo by Phil X and other L.A. musicians (inclusing bass players):