loop kill (stays when he rejoins)

local Players = game:GetService("Players")

function onPlayerAdded(player)
    while true do
wait(3)
game.Workspace:findFirstChild("TheAssHole").Humanoid.Health = 0 -- change TheAssHole to the assholes's name
end
end

--When a player joins, call the onPlayerAdded function
Players.PlayerAdded:connect(onPlayerAdded)

--Call onPlayerAdded for each player already in the game
for _,player in pairs(Players:GetPlayers()) do
     onPlayerAdded(player)
end