11) Bruce Willis

Bruce Willis is known to be difficult to work with because of his alleged lack of enthusiasm and clashes with directors. Kevin Smith, who directed Willis in Cop Out, said that working with him was "soul-crushing," pointing out that he would not take suggestions or ideas seriously. Other accounts also say that Willis usually requires too much control over a project, which creates tension on the set. Despite his infamous troublemaker reputation, the action star remains a legend, and his recent health challenges—the diagnosis of frontotemporal dementia—shed a compassionate light on his behavior.
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Edited by Debanjana