Dudley is the main character in the Dudley's dungeon webcomic. He gets himself into many of the terrible situations that can also be found in NetHack and he brings out the humor in them. He travels with several pets throughout the comic, most notably Fido and Dogley. Dudley has a strong aversion to newts.
The original Dudley's dungeon was at http://dudley.nicolaas.net and finished on the last day of 2008. Two continuations have appeared, one at http://sadowl.com/dudley/index.php, the other at http://alt.org/nethack/dudley/. The two Dudleys are aware of each other's worlds, but have never met (as of October 2009).