2012 Shredder >>>> 2003 Shredder
Mainly because he inflicted more relatively long-lasting consequences.
>Mutating/Brainwashing Karai
>Giving April to the Kraang
>Killing Splinter
>Beating Leonardo to near-death and driving the Turtles on the run
>The whole black hole incident
But also because he had a more personal connection to Splinter/the turtles.
AND also because he was way more relatively threatening in a fight than 2003. Remember the 1v8?

"Camp" is just another word for gay

>>149296503 (OP)
I don't think this opinion is unpopular, but the thing is that the 2012 series is so boring that no one saw it completely and no one knows this.

this is the best shredder