I use a variety of media. This one in particular (like most of the stuff I've submitted) is done in pen and pencil and put on the internet by having scanned it (via a scanner/copier.) Some of them (the colorful, clean, detailed ones) are digital, drawn in Corel Painter 11 using a Wacom Intuous 4 Medium tablet. And I have two of them (in the portal) that are done in acrylic paint, scanned or photographed.
Glad you're curious about this stuff. Glad you like the drawing, and thanks for the comment.