Dark Chick: Mages Guild Stewardess Ranis Athrys isn't outright 'evil,' but fits the trope.Dangerous Deserter: An Imperial Legion quest tasks you with hunting down such a deserter who is still Still Wearing the Old Colors and is now in the employ of a witch as her bodyguard.Worst of all, you don't even get a very good reward for killing her. Worse, she's supposed to have Health equal to 100x the player's current level, but due to a programming error, she has 800x that amount, making her virtually unkillable at higher levels.

She's capable of flinging a very powerful area of effect spell, is immune or resistant to every form of Destruction magic, and quickly regenerates lost Health, Magicka, and Fatigue.

Damage-Sponge Boss: Gedna Relvel, a lich from Tribunal's 'Crimson Plague' questline.

Once you are able to create customized spells, combining high-intensity, short-duration 'Weakness to _' spells with damage of that element is an easy way to deal massive damage relatively early. Damage-Increasing Debuff: The 'Weakness to _' spells, generally used for reducing a target's elemental resistances, are capable of sending it into the negative, meaning that enemies now take increased damage from that element.Additionally, there is a ' backpath' method to beating the main quest that only requires two particular NPCs to be alive, but again, you can also kill them to render even this method unwinnable. This can actually render the main quest unbeatable if you kill a plot-important NPC (the game does pop up a warning message telling you to reload a saved game if you do kill one).

Every NPC in the game can be killed if you choose/are able to do so.

Damage Discrimination: Averted for NPCs.

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