How do I make everyone look exactly like one person?

EDIT in 2020; Use HumanoidDescription or

1. Play game

2. Copy your Character in workspace or use the RigBuilderPlugin

3. Stop game

4. Remove everything except visual Character assets

5. Edit Character Model as needed

6. Paste Character in StarterPlayer folder

7. Name Model StarterCharacter

Old way

The simple way is to make a new account and dress them like a noob, then use CharacterAppearance to change their appearance when they join. The other way is to remove everything when they join and die.

--ClassNames or Names
local banned = {

    Hat = true, 
    Shirt = true, 
    Pants = true, 

    FlowerHat = true;
    Dominus = true;
    ThatOneThing = true;


}


function delete(obj)
    if banned[obj.ClassName] or banned[obj.Name] then
        game.Debris:AddItem(obj, 1/30)
        print("Deleted: " ..obj.Name)
    end
end

game.Players.PlayerAdded:Connect(function(player)
    player.CharacterAdded:Connect(function(c)
        c.DescendantAdded:Connect(function(obj)
            delete(obj)
        end)
    end)
end)

Remove all their hats, pants, shirts,reset their faces and change their playerColor's to a new character's ones

Tadam !