Don Cheadle is a storied actor who knows how to get the job done but stepping in to replace Terrence Howard as James Rhodes wasn’t the right choice. Viewers said that he didn’t seem right as a military or air force member, and his chemistry with Robert Downy Jr. was noticeably lacking compared to Howard.
You were able to buy that Howard and Downey had a relationship – they had been friends for a while. But, for some reason, that same element was missing once Cheadle stepped in.
James Franco as Oz in Oz the Great and Powerful
The iconic man behind the curtain from “The Wizard of Oz” received his own prequel movie with James Franco as the wizard, but the casting proved to be a misstep. Picture a powerful wizard, even one who doesn't actually have magic powers, and you're unlikely to come up with Franco.
Franco has the acting chops, and the movie wasn't terrible, but he seems more like a hipster playing a magician ironically than someone who really believes in himself. It would be like Michael Cera playing chocolatier Willy Wonka.
Dane DeHaan as Valerian in Valerian and the City of a Thousand Planets
Not a lot went right with this sci-fi movie, and plenty of critics and viewers said that Dane DeHaan (who has done plenty but nothing that noteworthy) might have been the weakest point. Many said that he just didn't feel right in the role.
The lack of chemistry with the other leads, such as Cara Delevingne, was another important point – he was supposed to be a charming, charismatic rogue like Han Solo. Still, DeHaan just couldn't pull it off, or the director dropped the ball. One reviewer even said DeHaan and Delevingne seemed like brother and sister.
Rami Malek as Freddie Mercury in Bohemian Rhapsody
The dear, departed Freddie Mercury oozed confidence, burst with charisma, and was absolutely chock-full of an undeniable persona. Unfortunately, none of those things are true for Rami Malek. The big problem is it's true for very few people. Rami Malek just falls into the ninety-nine percent of people that can't stand up to the unyielding force that was Mercury.
He had "the look" mostly down, but reaching Freddie's charisma? Sorry, Malek, you just didn't fit the bill. One viewer said a two-minute interview with Mercury had more charm than the entire movie.
Emma Watson as Belle in Beauty and the Beast
After "Harry Potter", Emma Watson had her pick of roles, and she...didn't pick very well. She made headlines as the lead in the live-action (mostly) reboot of "Beauty and the Beast," but not all of those headlines had positive things to say.
Her acting in the movie was far below her performances as Hermione Granger, her singing voice had to be redubbed, and many blasted Disney for using her just to draw in the Potter fandom. Going with a lesser-known actress that had more musical training might have produced a better movie, but it's become clear that's not what Disney is trying to do.