Unfortunately, Containment personnel arrived to soon and a police officer had been sent to attempt to catch the instance without knowing of its anomalous nature.
Am I stupid, or does this sentence, even if "to" is supposed to be "too", not make any sense? Shouldn't it be "arrived too late"?
The "the RPC-509" in the second-to-last collapsible also bothers me, even if it is arguably grammatically correct. I would substitute it for "instances of RPC-509" instead.
It's also a pet peeve of mine when article interviews try to write accents, though no one else seems to mind, so maybe don't listen to me. The characterization in this article is great though, some of the best I've seen on this site.
Even with those three nitpicks, this article was thoroughly engaging and worth my time. Good job! 5/5