Wolverine's popularity has always been rather surprising. The character is virtually defined by his sass and violence, and he's the type of the character who easily could have turned fans off. However, Wolverine persevered, thanks to the caliber of his writing over the years. The legendary X-Men member has a huge presence in media of all types, but the comics are where the most questions about Wolverine get answered.
Source：https://www.cbr.com/wolverine-age-death-healing-factor-marvel-comics/
