This bastard here is a 'Comic Con' piece I did a few years back.... it's originally drawn on gray "Canson" paper, and rendered with microns and ink-washes... the white parts are a mix of colored pencil and a white-out stick... if you ask me, I got waaay to trigger-happy with the white out, but I'm still happy with the silhouette.
I was bored one night, and decided to do some simple colors on it... the nice thing about doing 'gray-scale' pieces is that most of the work is done, you usually just need to slap in a color layer in good ol' Photoshop and DONE!!!