Hey Swampless! Good to see your SCP up.
Living fused and/or mutilated copies and copies that block each others' paths, will still attempt to the best of their ability to mimic
You don't need the comma here.
Should the subject die, they and all their copies, and any remains, of the copies, will disappear.
You don't need some commas here. 'Should the subject die, they, all their copies, and any remains will disappear'.
there were over a 16 thousand copies
Remove 'a'
I don't really think you need the doctor's note, but I like this one. I also think it'd be a great place to do some synchronized dancing in. Just imagine Thriller in here!