Okay I feel like i should have to say this from what ive already said but i will. A Summoning does not mean you have any control over the Demon thats what Bonds and Pacts are for. So to clarify she does not Control Lucipher, and as ive said were drawing from all Demonology here so that being said there is no Alpha Demon nor should there be because that thereby means no one can be Alpha right? makes sense to me any how. And you can be immortal and super smart and lots from your Demon but Invincible is not one of them, what make you think i would even consider that being an outcome while simply adding cannon. So for the record Lucifer is a very powerful Demon I wouldn't recommend summoning him he has an ego, but he is not Bonded to anyone, the girl is simply an NPC, that is all. In the same sense that Lucifer is very strong because he is a popular demon, and well know, so at one point was Ba'al a former Goddess turned demon. I would say they may be equal in power depending on what your definition of power is. I hope this wasnt to harsh but clarified for anyone. [@DarthSeverus394]