If anyone hasn't checked this out yet *link*
http://www.fireball20xl.com/spcc/index.php?id=1
While not an official series, it's a pretty nice fan comic. Written by Bryon Beaubien (known for That's My Sonic and being the first person to make the "Sonic's is gay" joke... that I'm aware of) and illustrated by Alan Solivan (known for The Rogue's Gallery series)(you can find there work at http://www.fireball20xl.com/).
"Samurai Pizza Cats: COLD" continues the series in a fan-like short of way. The beauty behind this comic is, rather than base it of its Japanese counterpart, it's based on the English dub and along with it even pokes fun at the English dub itself (page four, the misspelling of the title sequence is noticed, for example). So... its spoofing a show... thats a spoof of itself? Nice...
I just thought fans would like to see this if they haven't already.
"Jack's dead my friend...."
http://saber16.deviantart.com/