Wolverine. Anyone who has even a passing familiarity with the X-Men will agree that this Marvel saga would be nothing without Wolverine.
The X-Men comic book series was birthed by Stan Lee and his co-creator, Jack Kirby, in 1963. The 1990s cartoon enthralled my brothers and me with its gritty storylines and complex characters.
The X-Men went on to become a profitable movie franchise starting with its eponymous first release in the year 2000.