Mark Vanselow, who is the stunt double of Liam Neeson, said that the Ballymena-born star really "packs a punch".
He stated that the 62-year-old actor is good at squabbling and can now just leave him to it, the Daily Star Sunday reported.
However, he asserted that Neeson does the majority of the fighting and is "tough", and that the actor prepares himself by training himself to learn the fights, before the shoot.
Vanselow, who has been pretending to be Liam and pretending to beat people since 1999, has doubled for string of movies including, 'Taken', 'Taken 2', 'Battleship', 'Unknown', 'The Grey' and 'The A-Team'.