Okay, let's list these guys off starting from the bottom, doing each row left to right.

1ST ROW:
Batman vs. TMNT animated movie Shredder
Classic 1990 movie Shredder 
OG Mirage Comics Shredder 
GOAT 80s cartoon Shredder 
IDW Comics Shredder
TMNT/Power Rangers comic Shredder

2ND ROW: 
Super Mutation Shredder/Oroku Sawaki
2003 cartoon Shredder 
Super Shredder 
2012 cartoon Shredder 
TMNT Tournament Fighters Shredder (SNES) performing his famous AURA CRUSHER!

3RD ROW:
TMNT: Back to the Sewer cartoon Cyber Shredder 
2012 cartoon Super Shredder 
2003 cartoon Ch'rell's Mecha Shredder
TMNT 3: Radical Rescue (Game Boy) Cyber Shredder

4TH ROW:
2003 cartoon Tengu Shredder (Dragon form)
Rise of the TMNT cartoon Ancient Demon Shredder

I can't help but be proud of what I've made here. I may never feel like it, but I can see myself adding more to this someday. Who knows?

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