Ben 10 is one of the few newer cartoons that I actually enjoy. It a fantastic show (I've loved every incarnation of it, although I haven't seen any Omniverse yet) and I've been wanting to do some fan art for a long time. Planet Pulp's theme this month is anything Cartoon Network related, so it gave me the perfect excuse to draw some Ben 10 action.
I've included the original sketches along with the final pieces. Originally I was going to render them in my usual gouache/dry brush style, but I opted for a more retro style in the end.