Essence of the Human Science God
You are not an actual god, but you are the peak of humanity in how comic book captain america is a peak human. Your intelligence and understanding dwarfs any of your physical attributes however. You are the super genius, the one who builds an advanced suit of power armor in a cave with scraps, the one they call to fix a hole knocked in space time by an experiment gone wrong. You are probably the smartest person in the room in almost any given situation.
You are the equal and likely superior to just about any super genius you could care to name with a few exceptions in knowledge and skill. The technology you can make is beyond the wildest dreams of what any normal scientist could even comprehend. Advanced A.I., earth shattering power armor, reactors that generate cosmic energies, power nullifiers and more. You do however not have a limitless font of wisdom to make sure that knowledge gets put to good use. Your ability to make the 'right' choices in a given situation remains as it was before your apotheosis. You can further reverse engineer magic, psionics, and other things as a technological equivalent.
Optionally you could get this and also be as equally as capable a magic or psionic user making all of your tech magitech or even psitech, hell have psimagitech.
Perfect memory with infinite storage
None of your technology can be successfully corrupted or subverted by another force unless you build or modify it to possess such a weakness.
You are skilled in combat and can defeat anyone less then a supernatural master of combat or someone so strong you just cant hurt them.
Gain ownership of an Earth sized megastructure that serves as your home. It is hidden away in a pocket dimension and safe from most tampering or attacks. It is defended by billions upon billions of absolutely loyal robots. The strongest of these robots are capable of fighting and utterly dismantling individuals with city destroying capability. The megastructure and you are linked with an unbreakable connection and can command it anywhere, at any time, the megastructure is incapable of turning against you.
The megastructure can create and manipulate matter and energy giving you functionally infinite resources as you require. It has factories and matter forges that can create as much equipment and other tech then you could ever ask for.
It has its own habitats for other life if you want to do any collecting.
The megastructure can theoretically hold billions of people to live and work without issue. It is currently uninhabited except by you and your robots.
The megastructure has a gargantuan palace for yourself and anyone you take in, it is beyond luxurious.
It can resurrect any individual if it can scan something of them, i.e. their soul or some physical component, even a pinch of ashes is enough. It will automatically resurrect you if you are somehow killed without fail.
It possessed weapons that can shatter fleets of alien starships or fend off the occasional cosmic being you might trip over in DC or Marvel. It is tough enough to survive the omniverse imploding with a lot of dents and systems fried afterwards. Don't worry it can self repair, just very slowly if the damage is bad enough.
If you really need to it can move around and act as a FTL capable battle station of doom if you want to go full galactic warlord. The Megastructure can freely open portals or teleport to different locations, universes, dimensions, multiverses, and Omniverses if you aren't wanting to deal with the local Omniverse creator.
It has a one of a kind forge called the Relic Forge onboard which can let you manufacture extremely potent pieces of technology to put fear into cosmic entities. For when you want to arm your Gods with a Mjolnir or Infinity Gauntlet, just in case.
The God part comes in that the megastructure has an additional function. Using its systems it can create transcendent beings that stand head and shoulders over the normal super robots or AI you can make. The God Anvil can let you build or turn others into your own personalized super beings. Making these Gods is not for the faint of heart, each one represents a ripple of power that could destabilize entire settings, they are walking apocalypses. That said they are programmed to view you as their beloved creator with an unbreakable loyalty to weather anything and smother you to death in love, whether that be familial, friends forever, or some other type is up to you. Gods are psychologically incapable of even think of betraying you and automatically disregard anything that would even suggest they do so unless you order them. Even then it would make them uncomfortable to say the least. You may even turn yourself into a God and the megastructure will handle the process for you. A Gods vital essence (soul) is stored in the megastructure so even if they are killed you can simply recall their vital essence of being and slap it in a new vessel. Gods properly designed can threaten or even thrash cosmic beings.
Gods not in use can be put in storage pods where they will hibernate unaware until called back into service. Individuals converted into Gods, new Gods, or resurrected Gods are automatically placed in storage once completed or restored. You can set or modify the traits, attributes, powers, personality and every other facet of your Gods when they are in storage.
Essence of the Harem Protagonis
There is something about you that can attract anyone, even strange alien beings beyond the comprehension of mortals and gods alike. What it is that attracts these individuals will vary from person to person but there will always at least be something that will pique their interest. Their interest can easily blossom into fondness, a desire for friendship, or even genuine love if given some time to interact with you in some way whether it be in person or through hearing about you.
Are quite a bit tougher, enough that you could survive the rather destructive results of typical harem shenanigans. You will never suffer crippling or lethal wounds from any of those in your harem.
You will passively draw towards you individuals that have significant power, importance in their world plot wise or some other reason, grand destinies, and this such as that. Toggleable.
Granted infinite stamina and vitality, you are a quite able lover, able to please a mind boggling amount of people into bliss.
Any individuals that become part of your harem will be more willing to put aside differences and grievances to work towards your happiness and their own if circumstances permit. The feelings and loyalty they have for you will remain eternally strong unless you do something terrible to change that.
Fate, Destiny, and coincidence will bend, twist, warp, and maneuver to keep those in your harem yours. That doesn't mean they are bound to you forever if they honestly want to move on, just that things like individuals with mind control abilities, infernal lust powers, or a dirty monster tries to claim them these attempts at taking them will fail quite spectacularly. You can sense any who try to claim what is yours and who they are.
Essence of the Archmage
By consuming the essence of the Archmage you gain several boons
Perfect memory with infinite storage
Beyond genius level intellect
Capacity to learn any 'magic' even unique ones upon seeing it once or understanding enough about it. This also includes things like Ki, Chakra, soul power, etc.
Possess a supernatural reactor that can adapt to any supernatural energy to fuel spells, enchantments, powers, etc. this reactor provides a steady supply of power that will grow over time, right now you could use high consumption abilities with wild abandon and still not make much of a dent after a few hours.
Can teach others systems even if they previously lacked the capacity.
Manipulate entire systems or combine then with experimentation.
are capable of casting any spell as long as you have the energy not requiring any extra element like a focus or materials. The time required to cast if any remains however