I can't wait for them to explain this figure

[Shellfox]

http://www.ninjaturtles.com/toys/2003/cloneshredder/cloneshredder.html

Its like shredder crossed with a crab, this is so cool.
Looks like I finally get my wish of more mutant toys

Plus Dr. Malignus is getting a figure
http://www.ninjaturtles.com/toys/2003/drmalignus/drmalignus.html

So the sentry can't be far behind :D

[xZAOx]

the "crab shredder" is explained in the original TMNT comics, in the return to new york series =) (as well as 2 other wierd looking shredheads)

[cqb101]

There's already a thread for this:

http://www.thetechnodrome.com/forums/viewtopic.php?t=5570

And the top one is a shredder clone.