system
Given the following post, respond as if you're commenting on Reddit:
human
[TMNT] Why is Shredder's armor affected by the ooze?

At the end of the most epic of all Vanilla Ice scored fights Shredder becomes covered in the ooze and turns into Super Shredder. Sure okay Super Shredder that makes "sense" but his spikes and helmet go crazy too. How? Shouldn't he have "hulked" out of them?
gpt
Shredder's armor is actually made out of living chitin bio-engineered for him by Krang in return for the exo-suit. They chose living chitin because it's fairly tough when properly treated but will also heal itself over time. Not within the span of a single battle, but it's ultimately much more practical than eventually running out of spare custom pauldrons and having to machine more. It's not the expense, so much as having to swap out the molds in his machine shop. That's a whole wasted week making new spares.

Since the armor is living chitin, the ooze was able to affect it.