This is one of the first pictures I created with Adobe Illustrator ... it's Seto Kaiba from the original Yu-Gi-Oh Anime. Pretty childish, but I like him :D
I drew this using mostly the pen and the curvature tool.
Though this started out as a vector image, I ended up using Photoshop for the hair shadowing, so it's technically a pixel graphic.
There's also a version where the hair shades (shades of brown?) are realized using halftones, resulting in a total amount of only five colors in the entire picture (not counting black).