A new advertising campaign promises that the tips of Pilot's "Extra Fine" pens are small enough to render complicated drawings on Lego figurines. The pens' tips are 0.25mm thick, and use rolling ball points to transfer the ink from the repository to the canvas. Among the figurines advertised were a biker, construction worker, criminal, and even a Lego girl with a tramp stamp.
Now we're not sure how well Lego figurines retain ink on their bodies, or the permanence of the art. But it's still cool a bunch of Lego people finely tattooed. Pilot extra fine pens are available from Amazon in variety of colors and bundles. (Thanks Escapist!)