how do i make a fake chat/ fake player list for my game?

I am making a horror game and i want people to think that my monster "Fredric" is actually there. How do i make him talk in chat with the real players saying pre-typed up things and also show up in the player list. Thanks!

if u can help me out with a script its much appreciated

I think you can use the thing called "ChatMakeSystemMessage" with a Localscript inside of Startergui. Here is an example:

game.StarterGui:SetCore("ChatMakeSystemMessage", {
	Text = "[Random name]: Hi my name is Herobrinekid1",
	Color = Color3.new(255, 0, 0)

})

First of all, you need to disable the current in-game player list, or nobody will be fooled.

game.StarterGui:SetCoreGuiEnabled(Enum.CoreGuiType.PlayerList, false) -- this will set the player list to false (not showing)

This is a local script that goes inside StarterGui.

Then create your own ui in that area in studio.

Theres not much scripts involved, unless u want to make it fancy, and the players actually act like real players. I wont add anymore because u didnt attempt a script.

Chat Script:

game.StarterGui:SetCore("ChatMakeSystemMessage", {
    Text = "[Fake Player's Name]: Hi there!",
    Color = Color3.new(255, 0, 0)
})

local script inside startergui.

But yes, no more just spoon-feeding you. You MUST ADD a script attempt first or nobody will help you.