First he appears in jena & neila's stage (it's obvious why) he moves fast and sometimes make a creepy robotic laugh, he goes almost anywhere, he sometimes cancel his move (it's when he go to vent, sometimes he decided to go somewhere else instead of continuing) and keep ignoring him making him making more creepy sounds which makes your insanity bar go up faster, he can attack from, front, both sides, and back, which one to avoid is the same as others, BUT when he enters to the final phase, he have 3 different poses, each pose have it own behavior, if his iris are both red, it means that he will attack (this only works in both sides only) so close the door at him until he makes ticks noises if his iris are fully green, it means that he will rush in few seconds, hide under the table to avoid his attack, if his iris are yellow, this is a trick into make you busy with him and make your insanity bar go up, this pose can either back to his previous phase (he will come to the final phase again), or go somewhere else.

And thats all, hope you liked the idea