Bryan Singer may have returned to the "X-Men" franchise to direct the sequel to 2011's "First Class," entitled "Days of Future Past," but that doesn't mean that he's begun sticking his fingers into other directors' pies. Despite rumors that he shot the Easter egg at the end of the new film "The Wolverine," director James Mangold insisted that he tackled all of that work himself.

"Every scene in the movie, I directed," Mangold told MTV News' Josh Horowitz.

Mangold explained that him shooting that sequence was just another facet of his approach to material that, quite frankly, he didn't want to be too comic-booky. "One of the things I wanted very much, as you can tell, is I tried to dial back some of the kind of quippiness of the other films," he said. "There's not as much cigar-chomping, not as much one-liners after every moment of violence. I felt like you can't have it all — you can't have 'The Outlaw Josey Wales' and have him make a smart remark every three seconds."

While we won't spoil the contents of that Easter egg, Mangold revealed that its focus — on events that may play out in future "X-Men" films — still needed to maintain the tone that he established in "The Wolverine." "When it came time to think about an Easter egg at the back of the film, I think for me I just didn't want to make a gag," he said. "I didn't want to make a joke. I didn't want to somehow take the movie down after trying to build something with it."

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Mangold said that negotiating that content required some delicate discussions with 20th Century Fox, distributor of both "The Wolverine" and "X-Men: Days of Future Past." "The understanding was about trying to construct a scene in which we were very committed about it and made it just a continuing story that was serious."

"The Wolverine" opens is in theaters now.