The four horsemen of the apocalypse (courtesy of Revelations) - a variation on the theme. Dragons instead of Horses and they all seem to be just waiting around for the End of the World.
It's done in the same illustration style as my tarot card series.
Sketched in pencil, then inked with a 0.1, then outlined with a 0.4 felt tip.
The thicker lines were done using an Artline Calligraphy Pen - 0.2 weight.