Wolverine is a fictional character.
It is a most powerful superhero.
Although it is an marvel character with most important character in movie( X-men) .
Wolverine can rejuvenate itself because he is an mutant.
Basivally mutant are those which suffered from mutation.
Mutation is a sudden change in single base pair in the dna strand which make him powerful.
Stanlee is the creator of wolverine and other more characters in the marvel.
If u wanted to see u can watch his movie and movies really awesome.