Digital Spy sat down with the esteemed actor to discuss Fox's relationship with Wayne over the course of three movies, letting his stuntman do all the work, and why he "theoretically" might return for more Batman movies.
On Fox's friendship with Christian Bale's Bruce Wayne, he added: "He's known him since forever. He didn't raise him though, Alfred raised him. Alfred's the father figure.
"I never thought of Lucius as a father figure, more like a benevolent uncle."
The Dark Knight Rises is showing in cinemas now.
Photo gallery - Dark Knight Rises in pictures: