Casting in Hollywood can be a thorny thicket at the best of times, for as much as an inspired casting decision speaks for itself, often it feels like filmmakers are just throwing darts at a board and hoping for the best.
And this isn't a fact that's lost on actors themselves, who while usually grateful for the work, have occasionally admitted how utterly wrong they felt for a part.
This typically comes down to actors feeling that older or more physically suitable performers should've taken the part instead, and very occasionally, they'll even single out a specific actor who they felt was more appropriate.
Whatever their reasoning, though, these 10 actors all felt that they weren't really the tightest fit for their respective roles, even if they forged ahead regardless and, in many cases, even ended up receiving major awards, acclaim - and even Oscar wins - for their work.
As much as A-list actors might so often seem like indefatigable pillars of confident self-assurance, this lot were well aware there were probably "better" choices out there...
10. Michael Fassbender - Steve Jobs
Though Michael Fassbender ended up receiving a Best Actor Oscar nomination for his performance as Steve Jobs in Danny Boyle's eponymous biopic, it's fair to say that many still felt he was a peculiar pick to play the Apple magnate, given how he neither sounds nor looks anything like the man.
Believe it or not, this was a sentiment shared by none other than Fassbender himself, who only ended up taking the role after negotiations with Leonardo DiCaprio, Christian Bale, Matt Damon, Ben Affleck, and Bradley Cooper all fell through.
Upon receiving the script, he immediately felt he was wrong for the part, saying, "'This should be somebody else. It's a miscast scenario.'"
More specifically, he was puzzled that Christian Bale didn't take the part, later adding, "I thought to myself: Christian Bale is perfect, why isn't he doing it?...I actually called him up and told him that myself."
It's certainly easy to appreciate that Bale bears a far greater physical resemblance to Jobs, yet Fassbender still gave a terrific performance regardless, so it was hard to feel much short-changed by the end result.