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GLaDOS NPC

*This needs Portal to work* A NPC of GLaDOS that is invincible *kind of* and will turn away from you when you hit her because you are a monster for doing that :P
There is a glitch that you can't spawn GLaDOS everywhere in the map, but only in certain places, so you need to move GLaDOS with the phys gun if you want her on places you can't spawn her on.