The way Flash acquires his powers in the comics is often a result of a chance encounter with a complex set of circumstances. Usually, it involves a laboratory incident where he's exposed to a mixture of chemicals and a burst of lightning, granting him his speed powers.
The Flash got his powers from a chemical accident. He was in his lab when a lightning bolt struck a shelf of chemicals, dousing him in a combination of substances that interacted with the lightning's energy. This event altered his molecular structure, giving him super - speed.
Well, Flash acquires his powers when he's exposed to a combination of a certain chemical mixture and a powerful bolt of lightning. This unique event triggers his super-speed abilities.
Well, there are fanfictions where Spiderman gets his powers not from a single spider bite. Instead, he could be exposed to a series of bio - engineered substances that are spider - related. These substances interact with his DNA over time, gradually endowing him with the spider - like abilities we know, such as super strength, agility, and the ability to cling to walls.
Kraven's powers come from a mix of factors. He experiments on himself with special serums and constantly challenges himself in the wilderness to develop superhuman abilities like superior reflexes and acute perception.
Spiderman gets his powers after being bitten by a radioactive spider. This bite gives him enhanced strength, agility, the ability to climb walls, and a 'spider-sense'.
Miles gets his powers through a spider bite, just like Peter Parker. But the circumstances and specific effects of the bite might differ in some details.
Morbius acquires his powers through a scientific experiment gone wrong. A serum he developed intended to cure a disease ended up transforming him instead.