You've crossed 149 rooms in the A-section and now you are at A-150 so you open door A-150 and then see a paper with a cyan smiley face scribble on the paper, a few seconds pass and you see a girl with some science goggles and a bored expression but with a scribble face "Ugh! I hate being here... I always gotta check some-" then she notices you "Who are you?"