Just for your information, finding the best resolution and the origin of those pieces of arts took me a little bit of time ;)
And now, last but not least here an exclusive monster concept art Joe did for the game Darksiders!
The Fleamag was excluded from the final version of the game but here is a screenshot provided by Gunfire Games
Many thanks again to John Pearl (Design Director at Gunfire Games) who generously sent me that concept art!
... and many more that I will share with you soon! ;)