List of Unkillable and illegaly OP NPCs for me to mod out

I want to mod Unkillable and illegal npcs to make them killable and with legal stats.

so please, help me by naming every npc that is unkillable and has OP itens, skills, illegal stats. scripts that trigers cutscenes that kill you without chance to fight back like the guards in candlekeep library when you return there, anything made to rail road the player.

by op i mean, like, i dont remember his name. a mage that call you for a job. but if you refuse, he teleports you anyway. he had armor class way higher than his dexterity and itens allowed him. he had no items to increase his armor.
also, i want to remove the protection from interruption. so he wont cast spells when i am shoving my sword down his throath if he wants to cast spell, he should have hired a warrior to prevent us from shoving things on his throat
also the thief on baldurs gate 2 that insta kill you with his knife
its been years since i last played this game i dont remember their names.


i already did this before last time i played this game. i know its possible to mod all these things out of the game.
with EEkeeper.

i have seem many people asking for this. and i never found a mod that does this.