Lolbit-He will come through the top vent. The only way to stop him is by closing the top vent. To know hes there you will see his eyes and he will squeak.

Adventure Lolbit-He will go in your office and make annoying noises to distract you.

Tangle-She will come to the left door and announce that he is there to stop her close the door.

Redbear-He will come through the Right door and will make a spark sound to stop him close the door.

White Rabbit-He will appear in your office the only way to stop him is by putting up your monitor