Subject: no.4, Crab found wandering in the lab

Status: Missing, but I swear I can hear its scuttling in the ceiling…

This experiment was solely the work of my coworker whose grudge knows no end. He decided that this errant crab that pinched him should be the next test subject. Now this involved replacing its whole natural exoskeleton with metal and it's insides with strange fluid- But to be honest I'm more worried about my fellow researcher. We've been stuck down here for about two weeks and well- Things aren't getting any better and if he's willing to do this to a random animal that slighted him I worry about what will happen if any of us anger him.

Though I will agree the crab is a bit of a bastard, it's been using its newly gained resistance to shocks to snip wires and steal ampules meant for the escaped subject 3… I suspect may be in cahoots with each other but that's just a theory. And unrelated to the crab but if this document gets found before I do I've likely perished in this forsaken lab. Tell my family I'm sorry.