Name: Dougan D. Douglas
Race: Human
Occupation: Builder/Scientist/Scholar/Fighter
Looks:
Cheat: Essence of Scholar and Essence of Human Body
Essence of the Scholar
By consuming the essence of the Scholar, you gain several boons:
Perfect memory with infinite storage.
Beyond genius-level intellect, they do calculations and process things faster than supercomputers.
Immunity to insanity and memetic hazards. "Things Man Was Not Meant To Know" becomes more of a guideline than a rule.
Mastery of many sciences, even ones man has not discovered yet.
Can reverse engineer anything with enough time.
Gain practically infinite trains of thought and the ability to multitask.
Gain knowledge of any data storage device or book just by touching it—no reading necessary, this effect can be turned on and off.
Essence of the Human Body
By drinking this essence, you gain the potential to be able to perform and achieve numerous superhuman feats from across the Omniverse:
Your body is remade to the peak of your species with all genetic defects and such being rewritten to make way for the greatness you will achieve.
You can now perform anything possible with the human body. This also includes inherent abilities that a rare number of people in the world can perform, such as being triple-jointed, being able to control the blood flow of your body, complete control of your major organs, and so much more.
You can now also perform superhuman techniques and maneuvers that are possible in several forms of media without supernatural abilities like Ki, Nen, Haman, and the breathing styles used in the Demon Slayer Corps. Such as being able to somersault in the air three times like Nightwing from DC, turn your hands into extremely lethal weapons like Killua from Hunter X Hunter, and Contour your muscles to be able to strike from behind you against whoever is near your back with the same amount of force as if you attacked from the front.
Your overall immense Potential is limited by the physics of what world you're in. If you're in a world of magic like Black Clover, it will take you about a year to surpass Asta physically after his training in the Heart Kingdom without magic. If you're in Dragon Ball, it will take about five months for you to surpass Demon King Piccolo, and that is if you aren't doing anything to improve your training. Overall you will always have greater potential than any pure human in whatever world you end up in.
If you reincarnate as a character with superhuman potential your already immense potential will be seemingly limitless. A great example would be if you reincarnate as a quirkless human in My Hero Academia. Your body's ability to adapt to extreme stress will be leagues ahead of any other quirkless individual turning a "weak Zenkai" into a "mid Zenkai".
Optionally you can also learn and perform every superhuman technique that has ever been performed in any media and don't worry no matter what the world you will be able to perform those techniques even if it doesn't seem physically possible.
If you are reborn as a human with supernatural abilities the potential of those abilities will be always greater than any other human who doesn't have a special bloodline or is half-human.