And that's exactly what happened with the "Bond" series - but Hugh Jackman was told that he wouldn't have a say in the stories so he made a decision to back off.
Speaking to Variety this week to promote his latest film, The Greatest Showman, Hugh revealed he said "no" to the role as he felt the scripts had become too unrealistic.
"I was about to do X-Men 2 and a call came from my agent asking if I'd be interested in Bond", Jackman said. "I just felt at the time that the scripts had become so unbelievable and insane, and I felt like they needed to become grittier and real", he said.
He further added how he did not get any choice at that time as he said, "And the response was: 'Oh, you don't get a say". As it turns out, the reason why the Australian actor had rejected the role was later seen coming to fruition in the future Bond movies starring Craig.
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It's the early 2000s and Hugh Jackman has exploded onto the scene following his appearance in X-Men as the legendary Wolverine.
As well as discussing the what-could-have-beens of Bond, Jackman spoke of his one regret for Wolverine, a character he's chose to retire having played the Marvel mutant since the year 2000. "You just have to sign on". The main feeling I had was: "There, that's the character".
Craig went on to star in four Bond films, with a fifth and final movie expected in 2019.
So it's understandable that Jackman might not have wanted to be involved - even though he continued to star in the even-less plausible X-Men franchise, which is literally about superheroes. "And I was calm and at peace, but I'm going to miss that guy".