Essence ofDemonbane

You gain a free age and appearance change to whatever you want.

You are immune to powers, effects, and presences that induce madness or insanity. You could get into staring contests with Great Old Ones all day long if you wanted to with zero problems. You also find yourself incredibly resistant to curses, corruption, and the like.

You have nigh-unbreakable willpower to push through all manner of hardship and despair keep on fighting even in the face of literally cosmic odds.

You have an encyclopedic wealth on knowledge on the Cthulhu Mythos and related entities, places, and so on.

You have a peak human physique. You are also superhumanly good at boxing; to the point even magicians may get confused at how it's not a supernatural art.

You are now a highly skilled mecha pilot.

You have gained great talent with magic.

You now own and have contracted one or more Grimoires, which recognize you as their true master and will assist you as best as they can. The Pnakotic Manuscripts (Etheldreda), Calaeno Fragments (Hazuki), Book of Eibon (Kanata), Legacy of Gold (Diana), Cthaat Aquadingen (Aqua), R'lyeh Text, Key of Solomon, Legemeton, etc., or maybe even an original one are all valid choices. Each Grimoire varies in what Deus Machina and otherworldly knowledge/magic they offer, such as R'lyeh Text offering magic related to water and the Great Old One Cthulhu. These Grimoires you contract with gain a female human form/avatar if they didn't already have one.

By default (but optionally) you have become the master of the greatest of all Grimoires, the Kitav Al Azif, more commonly known as the Necronomicon (though she refers to herself simply as Al Azif). This version of Al Azif is complete and has all her pages, and can summon the Deus Machina Demonbane and Aeon.

Optionally, you may receive the Silver Key, appearing as a silver sword. This blade has a variety of powers, one of the most notorious of which is being able to end any effects that would manipulate time and space no matter how powerful and even prevent their activation. You may also install it in a mecha –such as a Deus Machina–, transforming the blade into the Silver Key Guardian God Engine Cor Leonis and allowing the mecha to draw infinite energy from the Multiverse.

Optionally, you may receive the Shining Trapezohedron. This small gem containing seemly infinite energy is in fact the very prison of the Evil Gods, sealed for eternity inside. It may shift into a weapon at your command, transforming into a golden, two-ended blade. Though it has many uses and powers, its most notorious ones is its horrifying ability to basically delete anything it hits without defense or even seal a weakened or defeated target into itself.

Optionally, you have gained a Fragment, a piece of the Evil Gods (that is, of the Great Old Ones and Outer/Other Gods), giving you some of their abilities and powers. The Evil God this Fragment is from is up to you, whether original or a copy of a canon one. You are immune to Evil God Erosion that it may cause.

Optionally, you may have a Shoggoth familiar. It's actually quite helpful around the house and quite good with kids.

You may gain any Demonbane/Nitroplus characters of your choice as companions. By default you will quickly grow a bond with them. You may choose what relationships you will develop with each of these companions (being lovers, friends, etc.). If relevant (self-insert into their world, world merge, etc.), you are guaranteed to meet these companions in-universe, meeting them in positive circumstances (this resurrects companions dead by that point, which may draw attention). Contracted Grimoires count as companions.

Optionally, you may Self-Insert into Demonbane or any series in its cosmology (Nitroplus, Senran Kagura, Nasuverse, SRW UX and series that comprise it, etc.), Cthulhu Mythos settings, or a variant (fanfics, etc.). You may choose when, where, and what world. The specifics are up you; maybe you get dropped in (default), maybe you insert yourself into or replace a certain character, maybe you get reincarnated, maybe you get merged with a local counterpart of yourself, etc.