As much as I too want to terrorize- I mean help my friends in Votv, I’ve heard it said the entire game would need be remade from ground up to implement Multiplayer. Either MrDrNose has said this themself or people from Discord have said this would be the case. But also in the FAQ this is the answer to if Multiplayer be in the game: “Most likely not, due to the lack of networking experience and lack of foundation for net in the game.”
However, someone was making a Votv Multiplayer Mod that is still in development and most recent thing I heard about it was it has a Demo version you can Download. Do note its ONLY for Sandbox and not for main game, probably this is so people can test it out and help the Modder figure out some bugs is my best guess.
Lastly there is a currently working Mod that is sort of like Multiplayer, it’s called the TwitchMannequins mod where you as the Streamer can set the conditions for who can spawn in as a Mannequin. People talk with a I believe built in TTS, their Username above the Mannequin and PFP (some peoples PFP seem to be invalid for whatever reason not sure why, the Modder probably knows better than I why it can be broken) on their face. So, you could truly have a Voices from the Void either help, or most likely terrorize you while you try to work. You can find the Mod on the Thunderstore or just search “voices of the void mod” that should get you to where you need go to download the mod.
Hope this was helpful information for you.