Holler button

The Missing has a button that can be pressed to interact with things. It is used to pick things up, throw things, drop things, push buttons, grab onto cranks to turn them, or grab things that can be pushed, pulled or dragged. If JJ is not standing near anything that can be interacted with this way, she will instead yell or say something. This is similar to pressing the A button to yell for Mario in the game Luigi's Mansion, or the meme-inspiring "Press X to Jason" from Heavy Rain.

Pressing the button will result in JJ saying things such as, "Emily, where are you?" "Who- who's there?" "Yoohoo!" if her mood is in its default state.

However, JJ has different moods and statuses she can be in, which change the things she says. Her moods/statuses are normal, annoyed, curious, scared, and injured. All of these statuses result in JJ saying different things, with different tones of voice.

The "injured" status occurs when JJ is injured in any way. She sounds choked and strangled.

The "curious" status occurs at various moments in the game. JJ says things such as "Hmm?" "What's that?" The way to tell that she is in this state is to watch her body language. If JJ is looking around left and right, she is curious.

The "scared" status occurs during the lightning storm near the beginning of the game, and when being chased by the hairshrieker. If JJ is in a panicked running animation, she is scared.

The "annoyed" status occurs when JJ receives certain text messages that annoy her. The way to tell that she is annoyed is by the fact that her arms are crossed over.

SPOILER ALERT!!

If playing as Post-Game JJ, the voice acting and even some of the things said are different.