Bowser

I drew this one on a Post-It while on the phone at work. It started as a generic dragon-dinosaur thing, then I threw in some Godzilla scales (kinda), and the next thing I knew it had a spiked shell on its back. I colored this one in photoshop, because I knew I wouldn't pull this one off with the markers at work. I didn't have any decent greens.

You can really get some decent lines and variations out of a ball-point pen. Of course, I only recommend it on small pieces.