Dev Patel - The Last Airbender
It's hard to forget M. Night Shyamalan's live-action rendition of the ever-popular cartoon series Avatar: The Last Airbender. Not only did he have all characters mispronouncing Aang's name, but he changed up races and dialects in seemingly random ways.
Dev Patel, who played Prince Zuko, doesn't remember his time on set very fondly. "I completely felt overwhelmed by the experience. I felt like I wasn't being heard," he told The Hollywood Reporter in 2016.