Hugh Jackman's secret? He didn't know wolverines are real

The Wolverine that Jackman plays onscreen is a mutant born with super-human senses and the power to heal from almost any wound.

Earlier this year, Jackman marked the character's final performance in "Logan," and is now promoting the film's special treatment "Logan Noir," with a black-and-white version of the film in theaters ahead of the DVD release.

While "Logan" takes on a grittier look and feel than the other movies of the franchise, director James Mangold, who also co-wrote the screenplay, wanted the story to be more sentimental.

"From the very beginning when we set out to make the movie, the one thing we knew is that we wanted to make a movie about family," he said.