Here's some monsters I drew using a brush pen I bought a couple o' weeks ago. If you're looking for it in a store, look for the package with the horrifically awful manga drawing on it.
I might as well do this product endorsement right:
"I've tried other brush pens, and they just don't get my whites as white as they could be. But this brush pen powers through stuck-on food, and my sheets have never been softer!"
"Three thumbs up! This product is great!"
"Its a brush! And a pen!"
This is also the first page of a new sketchbook I started this month.