It seems that the player has some control over the companions level up: Companion skills will also boost your own skills, so if you have a companion that has a lie skill, it will boost your own lie skill, I think. If you choose dumb dialogue options, your companions and NPCs will start to treat you like an idiot: Oh crap, Obsidian stole more stuff from my RPG System! They stole the Shrink Ray... I have been bragging about my shrink ray since I started to make this system. I wonder if Obsidian has spies in NMA. I'm obviously joking about them stealing my stuff, it's just some hilarious coincidences .