I will give a "relatively" mundane example from my life. At the university one of the subjects was taught to me by Oleg Anatolyevich Ryakhovsky.
At the age of 25, at the games "USSR vs. USA", he set a world record in the triple jump. Due to the subsequent injury, he had to give up professional sports and went into science, where he also achieved impressive success, becoming a doctor of technical sciences, was the best specialist in the country in a certain category of mechanical engineering, for a long time he has been head of the department in Baumank.
Even if it did not happen at the same time, his biography is impressive and inspiring.
As you know, the peak of mental and physical development, the so-called "perfection" and "omnipotence", among people reaches a crying girl. Become a girl, like this, now cry! Profit! Batman will fall at your feet, and Superman himself cannot do anything to you.
Yes, almost anyone can. This alone will take many years. you will need to develop tremendous physical strength, dexterity, you will also have to do business, the development of new technologies. In short, if you start now, hire a team of specialist mechanics, start studying martial arts, earn a huge fortune, then in ~ 30 years you will be able to be a hero.
You can't. At least for the average person
What do we know about Batman? He walks in a suit, shoots a rope with an anchor in the form of a bat and drives a cool car. Disassembly point by point?
The suit is nothing special, smoke bombs can still be obtained in our time, the main feature, if you differ in something, then you will immediately begin to plagiarize deals, as followers will appear and as a result you can tell if the main character is good or evil.
Batman does not fall, as he shoots like a spider-man with a special device (I don't know what it's called). Not a single person, even in good physical shape, will throw so accurately in an emergency. In addition, after the first successful flight, you will at least have to adjust your hand from a jerk, not to mention that it can tear it off under your own weight in equipment. Or worse, it will cut off with a rope
Cool car, on artificial intelligence, as it drives up on call from the button. To get such a car, you need to attract people, designers and hire people who will grind and program all the details for you by AI. You may even be able to hide who the true owner is, but what company you are associated with will be known.
From this it follows that it is impossible to create a completely positive character, some gadgets and tricks violate physical laws and who can you discover even the most insignificant detective who wants to be promoted