Alarm if X player on screen (Player Name)

[~Tziki~]

local PlayerList = {"Orc Warlord","Demon","Kharsek","Eternal Oblivion"}
Module.New('player alert', function(module)
local player = Self.GetSpectators(true)
    for i =1, #player do
        if table.contains(PlayerList, player[i]:Name()) then
            alert()
            module:Delay(2000)
        end
    end
end)

Any way to change this so that it plays alarm if someone comes on screen EXCEPT your friend?

Like i have a rune making farm, and want to know if someone comes on screen that isnt part of that farm.