You can't really do a big character in an action film; you're already suspending your disbelief in the action, then to suspend your disbelief in the character is too much.
Writing is so fun precisely because if you take out the right adjective, the readers can decide what kind of book is in their hands. Suspension of disbelief should not be mandatory in contemporary writing.
When he realized who he'd pulled over, the policeman shook his head in disbelief. He told me of all people I should know better. He gave me a real dressing down, but let me go.
You have to suspend disbelief a little bit to buy into your situation and to the story and to how the character will react. You have to tweak your credibility a little bit, is basically what it comes down to.
The more people know about you, the more face-time you get in the media, the harder your job becomes to create a character in whom people suspend disbelief.