A body substitute replaces the credited actor of a character in any recorded visual medium in shots where the character's body is shown but the face is either not visible or shown indistinctly, or in shots where the image of the credited actor's face is joined to the image of the body double's body. Body doubles are most often used for shots involving a nude scene. More specific terms are often used in special cases; a stunt double is used for dangerous or sophisticated sequences. This is in contrast to a stand-in wiho replaces an actor for non-filming purposes such as scene arrangement and lighting adjustments.Stunt double or body double can both be used for cases where special skills are needed.
Bruce Willis with Stuart F. Wilson and Danny Downey, Cop Out, 2010