So essentially it's a vocal mimicry monster, once it's aware of someone it stalks them from afar until that person is alone.

Let's say the monster is stalking player 1. When player 1 and the monster are out of earshot of players 2-4 the monster starts playing the audio from one of the other players (2-4) to try and lull 1 into a false sense of security.

The scariest moments of this game are when you are suddenly and without warning, isolated from your friends. So when you finally hear your friend talking in the distance you'll feel safe and seek them out.

As you get closer you start to realize that your friend isn't responding to you at all, just talking as if you're not there, then suddenly you realize you've just fallen into a trap and it might be too late.

I think this is an awesome idea for a monster that could be both horrifying and hilarious at the same time.