How can I share a Players Specific Character between Scripts?

Making a game where you can spawn in noobs to fight other players but I don't want the noobs attacking its owners and I don't know how I can transfer information of a players character so I can make that possible

Here is the script in to noobs

wait(2)
function findNearestTorso(pos)
    local list = game.Workspace:children()
    local torso = nil
    local dist = 99999999999999
    local temp = nil
    local human = nil
    local temp2 = nil
    for x = 1, #list do
        temp2 = list[x]
        if (temp2.className == "Model") and (temp2 ~= script.Parent) then
            temp = temp2:findFirstChild("Torso")
            human = temp2:findFirstChild("Humanoid")
			if (temp ~= nil) and (human ~= nil) and (human.Health > 0) then
                if (temp.Position - pos).magnitude < dist then
                    torso = temp
                    dist = (temp.Position - pos).magnitude
                end
            end
        end
    end
    return torso
end
--wait(math.random(0,5)/10)
while wait(0.1) do
	script.Parent.Human.Died:Connect(function()
		script.Parent:Destroy()
	end)
	if script.Parent.Human.Health == 0 then
		script.Parent:Destroy()
	end
    local target = findNearestTorso(script.Parent. Torso.Position)
    if target ~= nil then
        script.Parent.Human:MoveTo(target.Position, target)
    end
end

This appears to be a template for an old zombie pursuit script, so I can safely assume that this is, quite frankly, not your own code. However, before I answer your question, your code needs fixing. A lot of fixing.

• children() is a deprecated function (deprecated != unusable). You should use GetChildren().
• Instead of checking for ClassName, use IsA(className).
• FindFirstChild() over findFirstChild() (PascalCase over camelCase) and Magnitude over magnitude.
• Do not loop event listeners (the Died event in your case). This creates an unnecessarily large number of event listeners that can lead to lag.
• Also, do not use the while wait() do idiom if you have no clue what it does.

Now for the answer to your original question: How do I prevent NPCs from targeting other NPCs?

The Players service offers a function called GetPlayerFromCharacter(). This returns a player if the given Instance is associated with a client, or nil if the Instance is not associated with a client. Here is an example:

local plrs = game:GetService("Players")
for _, item in ipairs(workspace:GetChildren()) do
	if plrs:GetPlayerFromCharacter(item) then
		print("Player found")
	else
		print("No player found")
	end
end

Assuming there is one character in the workspace associated with the only player in-game, there will be one output of Player found, and every other output will be No player found.