if one thing's for sure, that guy is far more powerful than literally every single SCP combined to the power of 10, tesserated 100 times, and then factorialized 20 times
5000 is actually one of the scps that are used in case of such a severe instance, in which they need to reset the universe.
in order to learn more about it, watch the youtube video 'SCP-5000 Why?'
We will never be able to kill 682
And I highly doubt that even the gate guardian would be able to kill it
And I'm pretty sure 096 would just be like
"Ight imma head out" right after the creatures heart stops and is technically "dead" but it would heal and come back