[Sombre]

Commenting something out with ---- does nothing, it's just a note used by modders. You have to remove the # to get the game to ignore it. So

----newmonster 2850

or just

newmonster 2850

would get rid of it. But the easiest way is just add #restrictedgod 79 to that hero. He's still in the game then but won't turn up as a pretender.