local function applyHighlight(item)
    if item:IsA("Humanoid") then
        local highlight = Instance.new("Highlight")
        local parent = item.Parent
        if parent then
            local plr = game.Players:GetPlayerFromCharacter(parent)
            if not plr then
                highlight.Parent = parent
            end
        end
    end
end

for _, item in pairs(workspace:GetDescendants()) do
    applyHighlight(item)
end

workspace.DescendantAdded:Connect(applyHighlight)