Hexley is not Huxley but the Darwin's inofficial mascot.
Hexley DarwinOS Mascot Copyright 2000 by Jon Hooper.
All Rights Reserved.
Visit http://www.hexley.com/ for the full story.
Maybe you are looking for a nice folder icon (by stenosis on deviantART):
Random found on the web:
Hexley has also appeared in supertuxkart..
For the curious >