You wanted to know what Scp 001 was so you researched a bit,you stumble across.

The factory

That brings you to now you were looking for clues ,as a shady figure entered the room you were you didn’t recognize them but as you looked on their suit you could read O5-1

Good evening, Doctor.

No, no, don't stand up. And, yes, I am who you think I am.You know my number, and I know enough about you to make a duplicate that even your mother wouldn't be able to tell apart from the real you.