User blog comment:Saikou The Lewd King/Who can kills SCP-682?/@comment-25968390-20150608020118/@comment-27595114-20150608024704

Funny thing, 682 was actually faced with such cystalization before, it was one of the first thing it was tested with. It worked at first, atlthough much slower than usual. However he developped an immunity to it before it could do some real damage.

I don't know if you are asking if 682 got regen or not, because he does. Boy does he got one. But the speed is not consistent. It can go to instantly to 3 hours.

According to VS Battle (Not a reliable source I know but that's all I got) if The Doctor auto destrcut the TARDIS at a certain place it will blow up the universe or something. I would need to get more info.

And that insta kill thing you mentioned that kills organics stuff... SCP-682 has survived similar but slower. He was faced with a weapon that destroy non-human organic tissue on the molecualar level at contact ( it was a thootbrush mind you). It worked at first, but the guy became immune to it because, according to the scientist, he can adapt to be either organic or not. But again, the thootbrush wasn't instant.

Also 682 was once cut in half by a laser. Not only did 682 grew mirror skin because fuck you, but the two parts reformed into two complete 682...yeah.

Also Grnmachine, 682 was always immortal. Always. And it's implied to be from another dimension.