While 2000's X-Men is seen by many as one of the movies that helped define the modern superhero film genre, the behavior of its director Bryan Singer was apparently anything but heroic, as it supposedly led to Wolverine actor Hugh Jackman being injured.

As detailed by THR, during the scene toward the movie's end that occurs in the X-Jet with most of the main cast, sans Ian McKellen, Singer "was defiant and continued shooting," which led to the stunt that caused Jackman to bleed on camera. As the scene was not supposed to shoot that day, there was no stunt coordinator to supervise it, and producer Ralph Winter subsequently halted production.

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Allegedly, Singer's conduct "grew erratic and destructive," resulting in a fight between him and producer Tom DeSanto. According to sources, DeSanto tried to stop filming upon learning Singer was indisposed after taking an unnamed narcotic. Some members of the crew also took the same drug, leading DeSanto to worry about the safety of the people working on the project.

However, after Fox seemingly took Singer's side and informed DeSanto "to return to Los Angeles," the main cast members -- minus McKellen and Rebecca Romijn -- confronted Singer at his trailer in full costume and threatened to quit should DeSanto leave. It was during this moment Storm actor Halle Berry famously told Singer, "You can kiss my Black ass."

It should be noted that while DeSanto never said anything about the fight, a representative of Singer's stated, "nothing like that ever happened."

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The final film in 20th Century Fox's (now 20th Century Studios) X-Men franchise is The New Mutants.

Directed and co-written by Josh Boone, The New Mutants stars Maisie Williams as Rahne Sinclair/Wolfsbane, Anya Taylor-Joy as Illyana Rasputin/Magik, Charlie Heaton as Sam Guthrie/Cannonball, Henry Zaga as Roberto da Costa/Sunspot, Blu Hunt as Danielle Moonstar/Mirage and Alice Braga as Dr. Cecelia Reyes. The film arrives in theaters Aug. 28.