Mikey would do all the screaming Raph wouldn't, anyway.

"No! No, please, don't!"

But then the bone saw was on, and Mikey had to scream with all he was worth just to be heard over it, as loud as if HE was the one being vivisected.

He struggled against the shackles, adrenaline pumping so hard that he actually managed to make a few of them move against the table. Not enough to get out. Not nearly enough to get out. But enough that he was definitely putting strain on the table.

Because someone was going to hurt Raph, and Raph was going to not let them know just how much so that Mikey wouldn't know how much he was hurting, except Mikey would know. Mikey had to know from the sound of the bone saw and the other sounds that had to come after, what plastron sounded like when it was sawed through and the turtly bits underneath being taken apart -

"STOP! STOP! JUST LEAVE HIM ALONE! PLEASE - PLEASE NO -"

This was what Master Splinter had always warned them about. This was what they'd never truly imagined enough to be properly terrified of.

Mikey dissolved into horrified sobs, fighting so hard against his restraints that he was bruising himself harder.