- "Wolverine 2" is the sixth time that Hugh Jackman has played Wolverine, and it is also the first film series to be released in 3D format.
- Darren Aronofsky was originally the director of the film, and he also made preparations for the film for six months. He rewrote the script of the film and reset the entire storyline, but for a long time His overseas filming plan made him finally give up the film's directing.
- Gilmour del Toro once thought about the interest in directing the film, but he was unwilling to spend 2-3 years for this film, so he also gave up the opportunity to make this film.
- In order to become stronger for the role, Hugh Jackman turned to Dawn Johnson for help, suggesting that he eat a lot of chicken, steak and brown rice every day for six months, so that he can gain one pound a week.
- In order to show the wild body of Wolverine, in the topless scene, Hugh Jackman used extreme dehydration methods to show his muscle lines. 36 hours before the start of the filming, he did not drip, and his muscles would tighten after dehydration.
The Wolverine behind the scenes gags
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Viper: I'm sorry, I wish I could say more, but I was hired in part for my discretion.
Logan: I'm sure you were.
Viper: That and a certain talent for combining biochemistry and metaphysics. High-grade toxins are my specialty. It helps to be genetically immune to every poison known to man, as I am. And immune to the toxin that is man himself as I am.
Logan: I'll tell you what, you twisted mutant bitch, why don't you open these bracelets and we'll see who's made of what?
[Logan pops his claws trying to break the bracelets]
Viper: The claws. Now we can begin.
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[Logan throws Noburo off the balcony of his condominium... into a swimming pool]
Yukio: How did you know there's a pool down there?
Logan: I didn't.