I have no idea if this can be official, but here is a monster I had in mind :P Transmitters are small beings native to the forests. They have a radio as head, with this they can make sounds. Most of those sounds are old music and other old radio stuff, but a transmitter can also make sounds that doesn't come from a radio. These creatures maybe don't hunt humans directly, but they do stalk. When they stalk a person they will try to collect as much information about the victim, using all the memories to make sounds (like for example, someone passed away, and then will the Transmitter recreate that someone's voice). Transmitters may not be a murderer, but it can cause a victim to go completely insane, even going as far that the victim will just 'oof' themself.
